What was found in Jacksonville's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 1895 µg/L 19% of the EPA limit 10000 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019 | 1/3 | SYR4 |
| Nitrate-Nitrite | 1375 µg/L 14% of the EPA limit 10000 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019 | 1/3 | SYR4 |
| Fluoride | 909 µg/L 23% of the EPA limit 4000 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019 | 1/3 | SYR4 |
| Copper | 7.5 µg/L 0.6% of the EPA limit 1300 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2017
Highest in the city: 209 µg/L — NORTH MORGAN WATER COOP · 2,763 people · 2019 | 3/3 | SYR4 |
| Barium | 127 µg/L 6.4% of the EPA limit 2000 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019 | 1/3 | SYR4 |
| TTHM | 80.895 µg/L 101% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 109.77 µg/L — NORTH MORGAN WATER COOP · 2,763 people · 2019 | 3/3 | SYR4 |
| Chloroform | 45.2495 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 70.4 µg/L — APPLE CREEK WATER COOP · 968 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 25.195 µg/L 42% of the EPA limit 60 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 50.41 µg/L — APPLE CREEK WATER COOP · 968 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 22.7475 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 27.13 µg/L — NORTH MORGAN WATER COOP · 2,763 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 14 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 25.19 µg/L — APPLE CREEK WATER COOP · 968 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 7.1215 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 16.86 µg/L — APPLE CREEK WATER COOP · 968 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 3.173 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 16 µg/L — APPLE CREEK WATER COOP · 968 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 14.39 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 14.835 µg/L — NORTH MORGAN WATER COOP · 2,763 people · 2019 | 3/3 | SYR4 |
| Arsenic | 8.525 µg/L 85% of the EPA limit 10 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 4.5305 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 7.367 µg/L — APPLE CREEK WATER COOP · 968 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 4.935 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2019
Highest in the city: 5.42 µg/L — NORTH MORGAN WATER COOP · 2,763 people · 2019 | 3/3 | SYR4 |
| Lead | 2.25 µg/L 15% of the EPA limit 15 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2017
Highest in the city: 5.41 µg/L — APPLE CREEK WATER COOP · 968 people · 2018 | 3/3 | SYR4 |
| Chromium | 5.4 µg/L 5.4% of the EPA limit 100 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019 | 1/3 | SYR4 |
| Bromoform | 3.41 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2019 | 2/3 | SYR4 |
| Selenium | 3.075 µg/L 6.2% of the EPA limit 50 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.7772 pCi/L 36% of the EPA limit 5 pCi/L Main supplier: JACKSONVILLE · 19,903 people · 2017 | 1/3 | SYR4 |
| Pentachlorophenol | 0.7200 µg/L 72% of the EPA limit 1 µg/L Main supplier: JACKSONVILLE · 19,903 people · 2019 | 1/3 | SYR4 |
| Pfba | 0.0098 µg/L No EPA limit set Main supplier: JACKSONVILLE · 19,903 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: JACKSONVILLE · 19,903 people · 2025 | 3/3 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Jacksonville
| Supplier | Population served |
|---|---|
| JACKSONVILLE | 19,903 |
| NORTH MORGAN WATER COOP | 2,763 |
| APPLE CREEK WATER COOP | 968 |
Frequently asked questions about Jacksonville tap water
Is Jacksonville tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Jacksonville. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Jacksonville?
3 public water suppliers report drinking-water monitoring for Jacksonville, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Jacksonville's water?
The contaminants EPA monitoring detected in Jacksonville include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.