Is Jacksonville, IL Tap Water Safe? Quality & Contaminants

What was found in Jacksonville's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	1900 µg/L 19% of the EPA limit 10000 µg/L	1/3	SYR4
Nitrate-Nitrite	1400 µg/L 14% of the EPA limit 10000 µg/L	1/3	SYR4
Fluoride	915 µg/L 23% of the EPA limit 4000 µg/L	1/3	SYR4
Copper	390 µg/L 30% of the EPA limit 1300 µg/L	3/3	SYR4
Barium	140 µg/L 7% of the EPA limit 2000 µg/L	1/3	SYR4
TTHM	126.7 µg/L 158% of the EPA limit, in the worst sample — 80 µg/L	3/3	SYR4
Chloroform	84.1 µg/L No EPA limit set	3/3	SYR4
Total Haloacetic Acids (HAA5)	54 µg/L 90% of the EPA limit 60 µg/L	3/3	SYR4
Dichloroacetic Acid	42.2 µg/L No EPA limit set	3/3	SYR4
Bromodichloromethane	29.9 µg/L No EPA limit set	3/3	SYR4
Trichloroacetic Acid	29.4 µg/L No EPA limit set	3/3	SYR4
Monochloroacetic Acid	16 µg/L No EPA limit set	3/3	SYR4
Dibromochloromethane	15.9 µg/L No EPA limit set	3/3	SYR4
Lead	9.9 µg/L 66% of the EPA limit 15 µg/L	3/3	SYR4
Arsenic	9.4 µg/L 94% of the EPA limit 10 µg/L	1/3	SYR4
Monobromoacetic Acid	8.05 µg/L No EPA limit set	3/3	SYR4
Dibromoacetic Acid	6.2 µg/L No EPA limit set	3/3	SYR4
Chromium	5.4 µg/L 5.4% of the EPA limit 100 µg/L	1/3	SYR4
Bromoform	4.4 µg/L No EPA limit set	2/3	SYR4
Selenium	3.1 µg/L 6.2% of the EPA limit 50 µg/L	1/3	SYR4
Combined Radium (-226 And -228)	1.778 pCi/L 36% of the EPA limit 5 pCi/L	1/3	SYR4
Pentachlorophenol	0.7200 µg/L 72% of the EPA limit 1 µg/L	1/3	SYR4
Pfba	0.0098 µg/L No EPA limit set	1/3	UCMR-5
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	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 single worst sample on record — 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 highest level found 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.