2018 Report

 
Item

Letter from Managing Director and CEO


Dear Valued JEA Customer,


JEA takes stewardship of our community’s water supply very seriously and follows all regulatory requirements meticulously. With this in mind, we are pleased to provide you with our 2018 Water Quality Report.

In this publication you’ll find detailed information about JEA’s water treatment systems, results from our water quality testing and answers to common questions you may have about our water supply.

The Floridan aquifer, our pristine groundwater source, provides JEA customers with exceptional quality water. To sustain and protect this resource, JEA makes significant investments to responsibly manage it. We constantly monitor and optimize system operations to ensure the most reliable and cost-effective method of delivering water to you.

In this report, you will find a comprehensive summary of JEA’s drinking water quality results from the most recent sampling period. This represents an average of 45,000 tests performed each year by our team of laboratory scientists and technicians. These professionals work alongside our water operations staff each day to assure the safety of our drinking water.

We know the water we deliver to your home or business contributes significantly to your quality of life and that of our entire community. That’s why we work hard to manage and maintain these water resources, to meet today’s needs and for future generations.

As our community continues to grow, it’s up to every one of us to help conserve and protect this limited resource. Please join us at JEA in our pursuit of protecting and sustaining this critical natural resource. Visit jea.com/onewater to learn how you can help.

Sincerely,
Aaron Zahn
Managing Director and Chief Executive Officer

One Water, One Responsibility

St. Johns River

Here in Jacksonville, we are fortunate to have access to some of the most pristine water in the world—just by turning on the tap. We attribute this fact to the Floridan Aquifer, our natural water source, which is rated by the U.S. Geological Survey as one of the highest-quality water sources in the country—and bringing that water to hundreds of thousands of homes each day is quite a responsibility.

JEA draws water from more than 139 wells located throughout Duval, Nassau and St. Johns counties. From those wells, it is pumped into large reservoirs at one of 38 water treatment plants, where it is aerated to control naturally occurring odors and chlorinated to make it safe for drinking. We also utilize ozone at a few plants for sulfide removal and to improve taste and odor. After treatment, pumping stations send it through 4,200 miles of pipes to homes across our area.

While we have a sufficient water supply now, we all need to work together to ensure our water supply is sustainable for the future—when water conservation won’t be as simple as shortening showers or following lawn-watering guidelines.

JEA takes seriously its responsibility for delivering clean, safe water; infrastructure maintenance and development; and planning for the future needs of our community.

FDEP Source Water Assessments

In 2018, the Florida Department of Environmental Protection performed Source Water assessments to identify potential sources of contamination in the vicinity of JEA wells. Potential contamination sources include landfills, fuel storage tanks, dry cleaning facilities and wastewater disposal areas.  Assessment results are available on the FDEP Source Water Assessment and Protection Program website.

System# of Potential SourcesSusceptibility Level
Major Grid113Low-Moderate
Mayport2Low
Lofton Oaks Grid5Low
Ponte Vedra Grid2Low
Ponce de Leon Grid5Low-Moderate

Protecting Our Water

JEA produces and delivers more than 100 million gallons of water per day to customers across the First Coast.

We work hard to ensure that the water you receive is of the highest quality. In addition to all the regular water testing we perform (the results of which are included in this report), JEA has launched some major initiatives designed to upgrade our water infrastructure and protect the quality of our public drinking water supply, including:

West Nassau Water Treatment Plant Expansion

With the addition of a new well, ground storage tank, and service pumps, the capacity of this plant was increased from 1.41 million gallons per day (MGD) to 3.60 MGD to better serve the rapidly growing area of Nassau County. 

 

west-nassau-expansion
West Nassau Water Treatment Plant Expansion

 

 

Northwest Regional Water Treatment Plant

Located near Jacksonville International Airport, this new multimillion-dollar water treatment plant was brought into service during 2018 with the capacity to produce 6 million gallons of drinking water per day for the growing Northwest Jacksonville area.

Backflow Preventer Checkup Program

Homeowners with irrigation systems are required by law to have a device known as a backflow preventer, which prevents irrigation water from contaminating the public drinking water supply. JEA’s expanded Backflow Preventer Checkup Program helps customers with residential irrigation meters comply with state environmental regulations by automatically scheduling and sending backflow service providers to test these devices, ensuring that our drinking water remains safe.

Residential Backflow Preventer
Residential Backflow Preventer

Preserving Our Water Supply

In the past decade, the First Coast has seen tremendous population growth. While we have a sufficient water supply now, we all need to work together to ensure our water is sustainable for the future. Below are just a few of the innovative ways that JEA is working to preserve our water supply. 

Reclaimed Water

JEA’s award-winning reclaimed water program is a vital tool in our community’s efforts to protect the St. Johns River and sustain the Floridan aquifer. With more than half of Florida’s public water supply being used outdoors—primarily for irrigation—communities across the state began looking for ways to meet this need for irrigation water without depleting the aquifer.

Reclaimed water is one solution. By filtering, disinfecting and continuously monitoring the quality of our reclaimed water, JEA is able to meet the irrigation needs of our customers while protecting the environment. In 2018, JEA produced on average 17 million gallons per day of reclaimed water—that’s water that we don't have to pull from the Floridan aquifer. At the same time, the program protects the St. Johns River by reducing the amount of treated wastewater discharged into the river.

Northwest Regional Water Treatment Plant
Reclaimed water pipes are purple to distinguish them from pipes carrying drinking water.

Purified Water

From San Diego to Singapore, resource-conscious communities around the world are embracing new technologies that make it possible to fully reuse water. Purified water—or fully treating reclaimed water to drinking water standards—is one way to accomplish this.

While purified water is already in use in other communities, JEA has recently completed Phase 1 of a purified water initiative to potentially develop purified water in the future. Phase 1 was a technology evaluation project that successfully compared two different technologies at two water reclamation facilities. Next, Phase 2 is going to scale the selected technology in a demonstration pilot project.

We anticipate starting Phase 2 later this year. If successful, Phase 3 would be a full scale project to use the purified water as aquifer recharge. This would provide a more sustainable water supply for the region.

Protect Our Water: Visit Ways to Save for simple conservation tips we can all follow to safeguard our community's most valuable natural resource.

2018 Water Quality Monitoring Results

To find out which grid services your home, please see our Drinking Water Service Areas map

Accordion
Accordion Item
Closed Title:Major Grid
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)


Erosion of natural deposits
Sample Date: 02/17Level Detected: 7.07Range of Results: ND - 7.07
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)


Erosion of natural deposits
Sample Date: 02/17Level Detected: 1.296Range of Results: ND - 1.296
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)


Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: 02/17Level Detected: 0.495Range of Results: ND - 0.495
Violation: NoMCLG or MRDLG: 6MCL or MRDL: 6

Barium (ppm)


Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 02/17Level Detected: 0.0341Range of Results: 0.0142 - 0.0341
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Cadmium (ppb)


Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints
Sample Date: 02/17Level Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 5MCL or MRDL: 5

Chromium (ppb)


Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: 02/17Level Detected: 0.706Range of Results: ND - 0.706
Violation: NoMCLG or MRDLG: 100MCL or MRDL: 100

Fluoride (ppm)


Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 02/17Level Detected: 0.769Range of Results: 0.385 - 0.769
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Lead (point of entry) (ppb)


Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: 02/17Level Detected: 1.95Range of Results: ND - 1.95
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Mercury (ppb)


Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: 02/17Level Detected: 0.0063Range of Results: ND - 0.0063
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Nickel (ppb)


Pollution from mining and refining operations. Natural occurrence in soil
Sample Date: 02/17Level Detected: 2.11Range of Results: ND - 2.11
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 100

Nitrate (as Nitrogen) (ppm)


Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 03/18 - 05/18Level Detected: 0.239Range of Results: ND - 0.239
Violation: NoMCLG or MRDLG: 10MCL or MRDL: 10

Selenium (ppb)


Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: 02/17Level Detected: 7.83Range of Results: ND - 7.83
Violation: NoMCLG or MRDLG: 50MCL or MRDL: 50

Sodium (ppm)


Salt water intrusion, leaching from soil
Sample Date: 02/17Level Detected: 115.15Range of Results: 7.54 - 115.15
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 160

Thallium (ppb)


Leaching from ore-processing sites; discharge from electronics, glass and drug factories
Sample Date: 02/17Level Detected: 0.466Range of Results: ND - 0.466
Violation: NoMCLG or MRDLG: 0.5MCL or MRDL: 2

Volatile Organic Contaminants

Dichloromethane (ppb)


Discharge from pharmaceutical and chemical factories 
Sample Date: 02/18Level Detected: 0.41Range of Results: NA
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Synthetic Organic Contaminants

Di(2-ethylhexyl)phthalate (ppb)1


Discharge from rubber and chemical factories
Sample Date: 02/18 - 11/18Level Detected: 0.82Range of Results: ND - 0.82
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 6

Dalapon (ppb)


Runoff from herbicide used on rights of way
Sample Date: 01/18 - 12/18Level Detected: 1.1Range of Results: ND - 1.1
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Stage 1 Disinfectants and Disinfection Byproducts2

Bromate (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18Level Detected: 4.72Range of Results: ND - 161
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 10

Chlorine (ppm)


Water additive used to control microbes
Sample Date: 01/18 - 12/18Level Detected: 1.03Range of Results: 0.2 - 2.6
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18Level Detected: 28.54Range of Results: 10.73 - 35.46
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18Level Detected: 73.17Range of Results: 36.85 - 93.831
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)


Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 06/17 - 08/1790th Percentile: 0.130# Exceeding AL: 0 of 102
Violation: NoMCLG or MRDLG: 1.3AL(Action Level): 1.3

Lead (ppb)


Corrosion of household plumbing sytems; erosion of natural deposits
Sample Date: 06/17 - 08/1790th Percentile: 1.150# Exceeding AL: 1 of 102
Violation: NoMCLG or MRDLG: 0AL(Action Level): 15

Secondary Contaminants

Chloride (ppm)


Natural occurrence from soil leaching
Sample Date: 02/17 - 04/17Level Detected: 329Range of Results: 9 - 329
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 250

Iron (ppm)


Natural occurrence from soil leaching
Sample Date: 02/17 - 05/17Level Detected: 0.439Range of Results: 0.003 - 0.439
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 0.3

Odor (threshold odor number)


Naturally occurring organics
Sample Date: 02/17 - 06/17Level Detected: 64Range of Results: 1 - 64
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 3

Sulfate (ppm)


Natural occurrence from soil leaching
Sample Date: 02/17 - 06/17Level Detected: 258Range of Results: 22 - 258
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 250

Total Dissolved Solids (ppm)


Natural occurrence from soil leaching
Sample Date: 02/17 - 06/17Level Detected: 846Range of Results: 141 - 846
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 500
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually.
  3. High levels of these contaminants do not show adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L.
Accordion Item
Closed Title:Mayport
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)


Erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)


Erosion of natural deposits
Sample Date: 03/18Level Detected: 0.09Range of Results: N/A
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)


Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 6MCL or MRDL: 6

Barium (ppm)


Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 03/18Level Detected: 0.028Range of Results: N/A
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Cadmium (ppb)


Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 5MCL or MRDL: 5

Chromium (ppb)


Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 100MCL or MRDL: 100

Fluoride (ppm)


Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 03/18Level Detected: 0.688Range of Results: N/A
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Lead (point of entry) (ppb)


Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Mercury (ppb)


Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Nickel (ppb)


Pollution from mining and refining operations. Natural occurrence in soil
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 100

Nitrate (as Nitrogen) (ppm)


Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 03/18Level Detected: 0.165Range of Results: N/A
Violation: NoMCLG or MRDLG: 10MCL or MRDL: 10

Selenium (ppb)


Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 50MCL or MRDL: 50

Sodium (ppm)


Salt water intrusion, leaching from soil
Sample Date: 03/18Level Detected: 13.752Range of Results: N/A
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 160

Thallium (ppb)


Leaching from ore-processing sites; discharge from electronics, glass and drug factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0.5MCL or MRDL: 2

Volatile Organic Contaminants

Dichloromethane (ppb)


Discharge from pharmaceutical and chemical factories 
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Synthetic Organic Contaminants

Di(2-ethylhexyl)phthalate (ppb)


Discharge from rubber and chemical factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 6

Dalapon (ppb)


Runoff from herbicide used on rights of way
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Stage 1 Disinfectants and Disinfection Byproducts2

Bromate (ppb)


By-product of drinking water disinfection
Sample Date: N/ALevel Detected: N/ARange of Results: N/A
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 10

Chlorine (ppm)


Water additive used to control microbes
Sample Date: 01/18 - 12/18Level Detected: 0.83Range of Results: 0.2 - 1.79
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)


By-product of drinking water disinfection
Sample Date: 07/18Level Detected: 10.16Range of Results: 9.57 - 10.16
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 07/18 Level Detected: 25.92Range of Results: 21.86 - 25.92
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)


Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 06/17 90th Percentile: 0.018# Exceeding AL: 0 of 9
Violation: NoMCLG or MRDLG: 1.3AL(Action Level): 1.3

Lead (ppb)


Corrosion of household plumbing sytems; erosion of natural deposits
Sample Date: 06/1790th Percentile: ND# Exceeding AL: 0 of 9
Violation: NoMCLG or MRDLG: 0AL(Action Level): 15

Secondary Contaminants

Chloride (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Iron (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 0.3

Odor (threshold odor number)


Naturally occurring organics
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 3

Sulfate (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Total Dissolved Solids (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 500
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually.
  3. High levels of these contaminants do not show adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L.
Accordion Item
Closed Title:Lofton Oaks
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)


Erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)


Erosion of natural deposits
Sample Date: 02/17Level Detected: 0.748Range of Results: ND - 0.748
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)


Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 6MCL or MRDL: 6

Barium (ppm)


Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 02/17Level Detected: 0.0329Range of Results: 0.0281 - 0.0329
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Cadmium (ppb)


Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 5MCL or MRDL: 5

Chromium (ppb)


Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 100MCL or MRDL: 100

Fluoride (ppm)


Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 02/17Level Detected: 0.618Range of Results: 0.561 - 0.618
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Lead (point of entry) (ppb)


Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: 02/17Level Detected: 2.18Range of Results: ND - 2.18
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Mercury (ppb)


Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Nickel (ppb)


Pollution from mining and refining operations. Natural occurrence in soil
Sample Date: 02/17Level Detected: 3.41Range of Results: ND - 3.41
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 100

Nitrate (as Nitrogen) (ppm)


Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 10MCL or MRDL: 10

Selenium (ppb)


Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 50MCL or MRDL: 50

Sodium (ppm)


Salt water intrusion, leaching from soil
Sample Date: 02/17Level Detected: 29.044Range of Results: 18.387 - 29.044
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 160

Thallium (ppb)


Leaching from ore-processing sites; discharge from electronics, glass and drug factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0.5MCL or MRDL: 2

Volatile Organic Contaminants

Dichloromethane (ppb)


Discharge from pharmaceutical and chemical factories 
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Synthetic Organic Contaminants

Di(2-ethylhexyl)phthalate (ppb)


Discharge from rubber and chemical factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 6

Dalapon (ppb)


Runoff from herbicide used on rights of way
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Stage 1 Disinfectants and Disinfection Byproducts2

Bromate (ppb)


By-product of drinking water disinfection
Sample Date: N/ALevel Detected: N/ARange of Results: N/A
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 10

Chlorine (ppm)


Water additive used to control microbes
Sample Date: 01/18 - 12/18Level Detected: 1.05Range of Results: 0.2 - 2.2
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18Level Detected: 24.81Range of Results: 12.49 - 51.44
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18 Level Detected: 68.39Range of Results: 40.40 - 66.95
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)


Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 07/17 - 08/17 90th Percentile: 0.032# Exceeding AL: 0 of 30
Violation: NoMCLG or MRDLG: 1.3AL(Action Level): 1.3

Lead (ppb)


Corrosion of household plumbing sytems; erosion of natural deposits
Sample Date: 07/17 - 08/1790th Percentile: 1.400# Exceeding AL: 0 of 30
Violation: NoMCLG or MRDLG: 0AL(Action Level): 15

Secondary Contaminants

Chloride (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Iron (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 0.3

Odor (threshold odor number)


Naturally occurring organics
Sample Date: 02/17 - 05/17Level Detected: 5.66Range of Results: 1.00 - 5.66
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 3

Sulfate (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Total Dissolved Solids (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 500
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually.
  3. High levels of these contaminants do not show adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L.
Accordion Item
Closed Title:Ponce de Leon
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)


Erosion of natural deposits
Sample Date: 03/18Level Detected: 2.9Range of Results: ND - 2.9
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)


Erosion of natural deposits
Sample Date: 03/18Level Detected: 1.9Range of Results: 0.6 - 1.9
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)


Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 6MCL or MRDL: 6

Barium (ppm)


Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 03/18Level Detected: 0.0185Range of Results: 0.0152 - 0.0185
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Cadmium (ppb)


Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 5MCL or MRDL: 5

Chromium (ppb)


Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 100MCL or MRDL: 100

Fluoride (ppm)


Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 03/18Level Detected: 0.987Range of Results: 0.934 - 0.987
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Lead (point of entry) (ppb)


Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: 03/18Level Detected: 0.3Range of Results: ND - 0.3
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Mercury (ppb)


Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Nickel (ppb)


Pollution from mining and refining operations. Natural occurrence in soil
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 100

Nitrate (as Nitrogen) (ppm)


Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 03/18Level Detected: 0.213Range of Results: 0.177 - 0.213
Violation: NoMCLG or MRDLG: 10MCL or MRDL: 10

Selenium (ppb)


Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 50MCL or MRDL: 50

Sodium (ppm)


Salt water intrusion, leaching from soil
Sample Date: 03/18Level Detected: 56.607Range of Results: 36.635 - 56.607
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 160

Thallium (ppb)


Leaching from ore-processing sites; discharge from electronics, glass and drug factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0.5MCL or MRDL: 2

Volatile Organic Contaminants

Dichloromethane (ppb)


Discharge from pharmaceutical and chemical factories 
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Synthetic Organic Contaminants

Di(2-ethylhexyl)phthalate (ppb)


Discharge from rubber and chemical factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 6

Dalapon (ppb)


Runoff from herbicide used on rights of way
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Stage 1 Disinfectants and Disinfection Byproducts2

Bromate (ppb)


By-product of drinking water disinfection
Sample Date: N/ALevel Detected: N/ARange of Results: N/A
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 10

Chlorine (ppm)


Water additive used to control microbes
Sample Date: 01/18 - 12/18Level Detected: 0.95Range of Results: 0.36 - 2.9
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18Level Detected: 20.29Range of Results: 13.42 - 23.14
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18 Level Detected: 73.75Range of Results: 35.57 - 107.981
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)


Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 06/17 90th Percentile: 0.07# Exceeding AL: 0 of 12
Violation: NoMCLG or MRDLG: 1.3AL(Action Level): 1.3

Lead (ppb)


Corrosion of household plumbing sytems; erosion of natural deposits
Sample Date: 06/1790th Percentile: 1.900# Exceeding AL: 0 of 12
Violation: NoMCLG or MRDLG: 0AL(Action Level): 15

Secondary Contaminants

Chloride (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Iron (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 0.3

Odor (threshold odor number)


Naturally occurring organics
Sample Date: 03/18 - 04/18Level Detected: 64Range of Results: 1 - 64
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 3

Sulfate (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Total Dissolved Solids (ppm)


Natural occurrence from soil leaching
Sample Date: 03/18 - 04/18Level Detected: 662Range of Results: 528 - 662
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 500
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually.
  3. High levels of these contaminants do not show adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L.
Accordion Item
Closed Title:Ponte Vedra
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)


Erosion of natural deposits
Sample Date: 02/17Level Detected: 3.36Range of Results: ND - 3.36
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)


Erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)


Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 6MCL or MRDL: 6

Barium (ppm)


Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 02/17Level Detected: 0.037Range of Results: 0.0246 - 0.037
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Cadmium (ppb)


Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 5MCL or MRDL: 5

Chromium (ppb)


Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 100MCL or MRDL: 100

Fluoride (ppm)


Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 02/17Level Detected: 0.73Range of Results: 0.712 - 0.728
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Lead (point of entry) (ppb)


Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Mercury (ppb)


Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Nickel (ppb)


Pollution from mining and refining operations. Natural occurrence in soil
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 100

Nitrate (as Nitrogen) (ppm)


Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 10MCL or MRDL: 10

Selenium (ppb)


Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 50MCL or MRDL: 50

Sodium (ppm)


Salt water intrusion, leaching from soil
Sample Date: 02/17Level Detected: 50.278Range of Results: 19.670 - 50.278
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 160

Thallium (ppb)


Leaching from ore-processing sites; discharge from electronics, glass and drug factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0.5MCL or MRDL: 2

Volatile Organic Contaminants

Dichloromethane (ppb)


Discharge from pharmaceutical and chemical factories 
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Synthetic Organic Contaminants

Di(2-ethylhexyl)phthalate (ppb)


Discharge from rubber and chemical factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 6

Dalapon (ppb)


Runoff from herbicide used on rights of way
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Stage 1 Disinfectants and Disinfection Byproducts2

Bromate (ppb)


By-product of drinking water disinfection
Sample Date: N/ALevel Detected: N/ARange of Results: N/A
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 10

Chlorine (ppm)


Water additive used to control microbes
Sample Date: 01/18 - 12/18Level Detected: 1.08Range of Results: 0.2 - 2.1
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18Level Detected: 20.54Range of Results: 8.65 - 20.54
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18 Level Detected: 58.85Range of Results: 27.67 - 47.48
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)


Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 06/17  - 07/1790th Percentile: 0.237# Exceeding AL: 0 of 28
Violation: NoMCLG or MRDLG: 1.3AL(Action Level): 1.3

Lead (ppb)


Corrosion of household plumbing sytems; erosion of natural deposits
Sample Date: 06/17 - 07/1790th Percentile: 1.930# Exceeding AL: 0 of 28
Violation: NoMCLG or MRDLG: 0AL(Action Level): 15

Secondary Contaminants

Chloride (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Iron (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 0.3

Odor (threshold odor number)


Naturally occurring organics
Sample Date: 02/17Level Detected: 16Range of Results: 1 - 16
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 3

Sulfate (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Total Dissolved Solids (ppm)


Natural occurrence from soil leaching
Sample Date: 02/17Level Detected: 637Range of Results: 395 - 637
Violation: Yes3MCLG or MRDLG: N/AMCL or MRDL: 500
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually.
  3. High levels of these contaminants do not show adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L.
Accordion Item
Closed Title:Palm Valley
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)


Erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)


Erosion of natural deposits
Sample Date: 08/17Level Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)


Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: 08/17Level Detected: 0.085Range of Results: ND - 0.085
Violation: NoMCLG or MRDLG: 6MCL or MRDL: 6

Barium (ppm)


Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 08/17Level Detected: 0.022Range of Results: 0.022
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Cadmium (ppb)


Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 5MCL or MRDL: 5

Chromium (ppb)


Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 100MCL or MRDL: 100

Fluoride (ppm)


Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 08/17Level Detected: 0.72Range of Results: 0.68 - 0.72
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Lead (point of entry) (ppb)


Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 15

Mercury (ppb)


Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 2MCL or MRDL: 2

Nickel (ppb)


Pollution from mining and refining operations. Natural occurrence in soil
Sample Date: 08/17Level Detected: 0.48Range of Results: 0.13 - 0.48
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 100

Nitrate (as Nitrogen) (ppm)


Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 07/18Level Detected: 0.021Range of Results: 0.014 - 0.021
Violation: NoMCLG or MRDLG: 10MCL or MRDL: 10

Selenium (ppb)


Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 50MCL or MRDL: 50

Sodium (ppm)


Salt water intrusion, leaching from soil
Sample Date: 08/17Level Detected: 23.0Range of Results: 21.0 - 23.0
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 160

Thallium (ppb)


Leaching from ore-processing sites; discharge from electronics, glass and drug factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0.5MCL or MRDL: 2

Volatile Organic Contaminants

Dichloromethane (ppb)


Discharge from pharmaceutical and chemical factories 
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Synthetic Organic Contaminants

Di(2-ethylhexyl)phthalate (ppb)


Discharge from rubber and chemical factories
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 6

Dalapon (ppb)


Runoff from herbicide used on rights of way
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 200MCL or MRDL: 200

Stage 1 Disinfectants and Disinfection Byproducts2

Bromate (ppb)


By-product of drinking water disinfection
Sample Date: N/ALevel Detected: N/ARange of Results: N/A
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 10

Chlorine (ppm)


Water additive used to control microbes
Sample Date: 01/18 - 12/18Level Detected: 1.41Range of Results: 0.41 - 2.5
Violation: NoMCLG or MRDLG: 4MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18Level Detected: 27.61Range of Results: 16.22 - 27.61
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 01/18 - 12/18 Level Detected: 70.30Range of Results: 41.01 - 70.30
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)


Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 06/1790th Percentile: 0.132# Exceeding AL: 0 of 13
Violation: NoMCLG or MRDLG: 1.3AL(Action Level): 1.3

Lead (ppb)


Corrosion of household plumbing sytems; erosion of natural deposits
Sample Date: 06/1790th Percentile: 0.600# Exceeding AL: 0 of 13
Violation: NoMCLG or MRDLG: 0AL(Action Level): 15

Secondary Contaminants

Chloride (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Iron (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 0.3

Odor (threshold odor number)


Naturally occurring organics
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 3

Sulfate (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 250

Total Dissolved Solids (ppm)


Natural occurrence from soil leaching
Sample Date: NRLevel Detected: NRRange of Results: NR
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 500
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually.
  3. High levels of these contaminants do not show adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L.
Item

Terms and Abbreviations

To help you better understand terms included in the Water Quality Monitoring Results, we've provided the following definitions:

  • Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.
  • Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
  • Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.
  • Maximum Residual Disinfectant Level (MRDL): The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
  • Maximum Residual Disinfectant Level Goal (MRDLG): The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
  • Non-Detect (ND): Not detected and indicates that the substance was not found by laboratory analysis.
  • Not Required (NR): Secondary Contaminants with sample results below the MCL are not required to be reported.
  • Parts per billion (ppb) or Micrograms per liter (μg/l): One part by weight of analyte to 1 billion parts by weight of the water sample.
  • Parts per million (ppm) or Milligrams per liter (mg/l): One part by weight of analyte to 1 million parts by weight of the water sample.
  • Picocurie per liter (pCi/L): Measure of the radioactivity in water.
  • Variances and Exemptions: State or EPA permission not to meet an MCL under certain conditions.

Note: MCLs are set at stringent levels. To understand the possible health effects described for many regulated consituents, a person would have to drink two liters of water every day at the MCL for a lifetime to have a one-in-a-million chance of having the described effect.

Important Information

The Water Quality Report is provided to all customers of community water systems on an annual basis as required by the Environmental Protection Agency (EPA) under the 1996 Safe Drinking Water Act Amendments.

JEA routinely monitors for contaminants in your drinking water according to federal and state laws, rules, and regulations. Except where indicated otherwise, this report is based on the results of our monitoring for the period of January 1 to December 31, 2018 Data obtained before January 1, 2018, and presented in this report are from the most recent testing done in accordance with the laws, rules, and regulations. Out of more than 100 contaminants for which JEA routinely tests, only those that have been detected appear in the tables.

The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.

Contaminants that may be present in source water include:

  • (A) Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
  • (B) Inorganic contaminants, such as salts and metals, which can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
  • (C) Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
  • (D) Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.
  • (E) Radioactive contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities.

To ensure that tap water is safe to drink, the EPA prescribes regulations, which limit the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water, which must provide the same protection for public health.

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that the water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency’s Safe Drinking Water Hotline at 1-800-426-4791.

Additional Information

Lead: If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. JEA is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at epa.gov/safewater/lead.

 

TTHM [Total Trihalomethanes]: The following samples during 2018 exceeded the TTHM MCL of 80 ppb. However, the system did not incur an MCL violation because all annual average results at all sites were below the MCL. Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with their liver, kidneys, or central nervous systems, and may have an increased risk of getting cancer.

  • Major Grid:
    • 6505 Greenfern Lane: 85.09 and 83.48 ppb (Apr) 
    • 172 Wandering Woods Way: 89.10 ppb (Oct)
    • 2624 Seneca Drive: 93.83 ppb (Jul)
  • Ponte Vedra Grid:
    • 2371 S. Ponte Vedra Blvd.: 107.98 ppb (Oct) 
    • 125 Tides Edge Pl.: 99.60 ppb (Apr), 80.49 ppb (Jul), 83.54 ppb (Oct)

Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice from their health care providers about drinking water. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbiological contaminants are available from the Safe Drinking Water Hotline, (800) 426-4791.

Water Hardness Levels

Water is described as “hard” when it contains high levels of dissolved minerals—primarily calcium and magnesium. While these naturally occurring compounds can leave spots on dishes and windows (easily removed with white vinegar), they do not present a health risk. In fact, both calcium and magnesium are commonly taken as health supplements.

Water Treatment Plantppmgpg
Major Grid (Duval and St. Johns Counties)    
Arlington34520
Beacon Hills35921
Brierwood34020
Cecil Commerce Center1318
Community Hall20112
Deerwood III38522
Fairfax24114
Greenland31218
Hendricks 26916
Highlands24314
Julington Creek37822
Lakeshore18811
Lovegrove28717
Main Street23514
Marietta25215
McDuff25615
Monument47828
Morthwest27016
Norwood22713
Oakridge31518
Ridenour28316
Royal Lakes44526
Southeast30318
Southwest1368
St. Johns Forest47928
St. Johns North23514
Westlake31118
Woodmere23914
Independent Plant    
Mayport26215
Lofton Oaks Grid (Nassau County)    
Lofton Oaks30518
Nassau Regional28817
Otter Run28817
West Nassau30918
Ponce De Leon Grid (St. Johns County)    
A1A North36721
A1A South33219
Ponce de Leon41924
Ponte Vedra (St. Johns County)    
Corona Road27916
Ponte Vedra North35721

Contact Us

For more information on JEA’s water quality tests, please contact us.

  • By phone: 904-665-6000
  • By email: WaterQuality@jea.com
  • By mail: JEA Water Quality, 1002 N. Main Street, Jacksonville, FL 32206
  • In person: JEA’s board meetings are held on the third Tuesday of every month at JEA’s Downtown offices, located at 21 W. Church St., Jacksonville. The public is invited to attend.

Printed Versions of the Water Quality Report

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