2019 Water Quality Report

 
Item
Woman bathing newborn

Each year, JEA performs more than 45,000 tests on your drinking water. This report provides a comprehensive summary of all the parameters that were found to be present in the most recent sampling period. As the data in this report indicates, JEA’s water supply, the Floridan aquifer, is an excellent source of high-quality water. The citizens of Jacksonville and Northeast Florida are fortunate to have a drinking water resource that is so pristine and pure.

In order to sustain and protect this valuable resource, JEA continually invests in the management of our water source to maintain an abundant supply of fresh water. We constantly monitor and optimize system operations to ensure the most reliable and cost-effective method of delivering your drinking water.

Our state-of-the-art technology monitors our water supply grid to bring fresh, clean water to your home. We work hard to help our customers learn how to conserve Northeast Florida’s most precious resource, the Floridan aquifer, so that we may continue to benefit from it for generations to come.

FDEP Source Water Assessments

In 2019, 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 Grid7Low
Ponte Vedra Grid2Low
Ponce de Leon Grid5Low-Moderate

JEA's Water System Process

The JEA drinking water system consists of wells, water treatment plants, the distribution grid of pipelines, and the customers’ meters. We have over 130 wells that withdraw water from the Floridan aquifer, about 1,000 feet below land surface. The fresh, clean water is pumped from the well fields to one of 38 water treatment plants, where it then flows through an aerator to remove the sulfur (rotten egg) odor. The water leaves the reservoirs and is disinfected with chlorine per health regulations before it enters over 4,600 miles of water lines for distribution to our customers. Ozone is also utilized at a couple plants for sulfide removal and to improve taste and odors.
Learn more about the process

JEA's State-of-the-Art Water Monitoring System

JEA has a state-of-the-art operations network in place, called Supervisory Control and Data Acquisition (SCADA), which enables us to monitor our water supply system and bring you an uninterrupted supply of fresh, clean water to your home. SCADA is a technology that allows us to remotely control and monitor conditions at our water plants 24 hours a day. An operator monitors and controls the treatment facilities through a centralized computer system that shows a representation of the water plant system instrumentation and equipment indicating pressure, flow, reservoir levels, chlorine level, and pH, as well as critical alarms.

Backflow Prevention Program

Because of the risk of cross connection, certain water service connections are required by state and local regulations to have a backflow preventer, and to have it tested regularly to determine if the devices are functioning properly. Backflow preventers are owned and maintained by customers, not the utility. As more and more service connections are protected, our water supply becomes safer and more reliable.
Learn more about the Backflow Prevention Program

Purified Water Program

To ensure sustainable water supply for the future, JEA is evaluating water purification as one option for aquifer recharge. In cooperation with the St, Johns River Water Management District, Project H2.0 will be a demonstration facility to show the ultra-high purity and cost effectiveness of reclaimed water purification. The 1 million gallon per day facility will have extensive visitor engagement and demonstrate how ultrafiltration, low-pressure reverse osmosis, and advanced oxidation can treat reclaimed water to pure drinking water levels for future use.
Learn more about Purified Water

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. In 2019, JEA produced on average 19 million gallons per day of reclaimed water to meet the irrigation needs of our customers while also protecting the environment. That’s water that we don’t have to pull from the Floridan aquifer. At the same time, it reduces the amount of treated wastewater discharged into the St. Johns River.
Learn more about Reclaimed Water

2019 Water Quality Monitoring Results

Accordion
Accordion Item
Closed Title:Major Grid
Open Text:

Microbiological Contaminants

E. coli


Human and animal fecal waste
Sample Date: 01/19 - 12/19Level Detected: 1Range of Results: ND - 1
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

E. coli (at the ground water source)


Human and animal fecal waste
Sample Date: 01/19 - 12/19Level Detected: 1Range of Results: ND - 1
Violation: YesMCLG or MRDLG: 0MCL or MRDL: 0

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: 03/19Level Detected: 0.237Range of Results: ND - 0.237
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

Stage 1 Disinfectants and Disinfection Byproducts2

Bromate (ppb)


By-product of drinking water disinfection
Sample Date: 01/19 - 12/19Level Detected: 7.28Range of Results: ND - 151
Violation: NoMCLG or MRDLG: 0MCL or MRDL: 10

Chlorine (ppm)


Water additive used to control microbes
Sample Date: 01/19 - 12/19Level Detected: 1.0Range of Results: 0.2 - 2.88
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: 01/19 - 12/19Level Detected: 29.09Range of Results: 7.10 - 35.84
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 01/19 - 12/19Level Detected: 78.14Range of Results: 33.61 - 120.151
Violation: NoMCLG or MRDLG: N/A2MCL 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 Grid
Open Text:

Microbiological Contaminants

E. coli


Human and animal fecal waste
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

E. coli (at the ground water source)


Human and animal fecal waste
Sample Date: N/ALevel Detected: N/ARange of Results: N/A
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

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: 0.9Range 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: 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: 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

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: 01/19 - 12/19Level Detected: 0.96Range of Results: 0.21 - 1.77
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: 07/19Level Detected: 30.39Range of Results: 25.34 - 30.39
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 07/19 Level Detected: 74.95Range of Results: 44.86 - 74.95
Violation: NoMCLG or MRDLG: N/A2MCL 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 Grid
Open Text:

Microbiological Contaminants

E. coli


Human and animal fecal waste
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

E. coli (at the ground water source)


Human and animal fecal waste
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

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

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: 01/19 - 12/19Level Detected: 0.88Range of Results: 0.2 - 2.0
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: 01/19 - 12/19Level Detected: 25.86Range of Results: 12.27 - 24.07
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 01/19 - 12/19 Level Detected: 65.60Range of Results: 40.99 - 79.50
Violation: NoMCLG or MRDLG: N/A2MCL 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 Grid
Open Text:

Microbiological Contaminants

E. coli


Human and animal fecal waste
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

E. coli (at the ground water source)


Human and animal fecal waste
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

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: 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: 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

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: 01/19 - 12/19Level Detected: 1.22Range of Results: 0.21 - 3.61
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: 01/19 - 12/19Level Detected: 20.15Range of Results: 5.84 - 29.71
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 01/19 - 12/19 Level Detected: 67.57Range of Results: 23.67 - 83.471
Violation: NoMCLG or MRDLG: N/A2MCL 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 Grid
Open Text:

Microbiological Contaminants

E. coli


Human and animal fecal waste
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

E. coli (at the ground water source)


Human and animal fecal waste
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

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

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: 01/19 - 12/19Level Detected: 1.01Range 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: 01/19 - 12/19Level Detected: 33.87Range of Results: 7.59 - 33.87
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 01/19 - 12/19 Level Detected: N/A2Range of Results: 43.54 - 96.80
Violation: NoMCLG or MRDLG: N/A2MCL 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. N/A indicates 4 quarters of samples have not yet been taken, so the Level Detected cannot be calculated.
  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 Grid
Open Text:

Microbiological Contaminants

E. coli


Human and animal fecal waste
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

E. coli (at the ground water source)


Human and animal fecal waste
Sample Date: NDLevel Detected: NDRange of Results: ND
Violation: NoMCLG or MRDLG: 0MCL or MRDL: See note

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: 03/19Level Detected: 0.026Range of Results: 0.019 - 0.026
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

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: 01/19 - 12/19Level Detected: 1.26Range of Results: 0.2 - 1.7
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: 10/19Level Detected: 17.31Range of Results: 17.12 - 17.31
Violation: NoMCLG or MRDLG: N/AMCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)


By-product of drinking water disinfection
Sample Date: 10/19Level Detected: 68.11Range of Results: 61.90 - 68.11
Violation: NoMCLG or MRDLG: N/A2MCL 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.
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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, 2019. Data obtained before January 1, 2019, 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 (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 2019 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:
    • 172 Wandering Woods Way: 80.36 ppb (Jul), 120.15 ppb (Oct)
    • 9170 Milton Drive: 81.14 ppb (Jan)
  • Ponce de Leon Grid:
    • 2371 S. Ponte Vedra Blvd.: 83.09 ppb (Oct)
    • 125 Tides Edge Place: 83.47 ppb (Jul)

E. coli: November 25, 2019, we sampled 6 of our 39 wells for the fecal indicator, E. coli. We were notified on November 26 that St. Johns North well #4 tested positive for E. coli. On November 26, we took five additional samples from the well, issued a Boil Water Advisory (BWA) for the area, and sampled the distribution system for two days. All samples were Absent for coliforms, and the BWA was lifted November 28. E. coli are bacteria whose presence indicates that the water may be contaminated with human or animal wastes. Microbes in these wastes can cause short-term effects, such as diarrhea, cramps, nausea, headaches, or other symptoms. They may pose a special health risk for infants, young children, some of the elderly, and people with severely compromised immune systems.

Immuno-compromised persons: 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.

View Water Hardness Levels by Zip Code

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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