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Tap water quality report

Clayton, IL

EPA monitoring detected 12 contaminants across the 3 water suppliers serving Clayton. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

3
water suppliers
7,650
people served
12
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Clayton'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.

ContaminantLevel vs EPA limitSuppliersSource
Copper
2350 µg/L 181%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
Main supplier: ABS WATER COOP · 6,858 people · 2019
2/3 SYR4
Lead
37.589999999999925 µg/L 251%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: ABS WATER COOP · 6,858 people · 2019
2/3 SYR4
TTHM
27.459999999999994 µg/L 34%
of the EPA limit 80 µg/L
Main supplier: ABS WATER COOP · 6,858 people · 2019
2/3 SYR4
Dibromochloromethane
10.424999999999997 µg/L
No EPA limit set
Main supplier: ABS WATER COOP · 6,858 people · 2019
2/3 SYR4
Bromodichloromethane
9.139999999999997 µg/L
No EPA limit set
Main supplier: ABS WATER COOP · 6,858 people · 2019
2/3 SYR4
Total Haloacetic Acids (HAA5)
8.079999999999997 µg/L 13%
of the EPA limit 60 µg/L
Main supplier: ABS WATER COOP · 6,858 people · 2019
2/3 SYR4
Dibromoacetic Acid
4.429999999999999 µg/L
No EPA limit set
Main supplier: ABS WATER COOP · 6,858 people · 2019
2/3 SYR4
Chloroform
4.119999999999998 µg/L
No EPA limit set
Main supplier: ABS WATER COOP · 6,858 people · 2019
2/3 SYR4
Bromoform
4.044999999999999 µg/L
No EPA limit set
Main supplier: ABS WATER COOP · 6,858 people · 2019
2/3 SYR4
Dichloroacetic Acid
2.82 µg/L
No EPA limit set
Main supplier: ABS WATER COOP · 6,858 people · 2019
1/3 SYR4
Trichloroacetic Acid
1.18 µg/L
No EPA limit set
Main supplier: ABS WATER COOP · 6,858 people · 2019
1/3 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: ABS WATER COOP · 6,858 people · 2025
2/3 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 Clayton

SupplierPopulation served
ABS WATER COOP 6,858
CLAYTON 709
CLAYTON WORK CAMP 83

Frequently asked questions about Clayton tap water

Is Clayton tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Clayton. 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 Clayton?

3 public water suppliers report drinking-water monitoring for Clayton, Illinois to the EPA. Each is listed above with its population served.

What contaminants are in Clayton's water?

The contaminants EPA monitoring detected in Clayton include Copper, Lead, TTHM, Dibromochloromethane, Bromodichloromethane. 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.