Is Atwood, IL Tap Water Safe? Quality & Contaminants

What was found in Atwood'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
Copper	1770 µg/L 136% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Fluoride	1089.5 µg/L 27% of the EPA limit 4000 µg/L Main supplier: ATWOOD · 1,155 people · 2018	1/1	SYR4
Nitrate	927 µg/L 9.3% of the EPA limit 10000 µg/L Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Nitrate-Nitrite	890.25 µg/L 8.9% of the EPA limit 10000 µg/L Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Barium	246.865 µg/L 12% of the EPA limit 2000 µg/L Main supplier: ATWOOD · 1,155 people · 2018	1/1	SYR4
Total Haloacetic Acids (HAA5)	16.92 µg/L 28% of the EPA limit 60 µg/L Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
TTHM	15.5 µg/L 19% of the EPA limit 80 µg/L Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Chloroform	14.73 µg/L No EPA limit set Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Dichloroacetic Acid	10.17 µg/L No EPA limit set Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Trichloroacetic Acid	4.35 µg/L No EPA limit set Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Chlorobenzene	4.2 µg/L 4.2% of the EPA limit 100 µg/L Main supplier: ATWOOD · 1,155 people · 2014	1/1	SYR4
Monochloroacetic Acid	3.35 µg/L No EPA limit set Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Dibromoacetic Acid	1.7 µg/L No EPA limit set Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Combined Radium (-226 And -228)	1.3053 pCi/L 26% of the EPA limit 5 pCi/L Main supplier: ATWOOD · 1,155 people · 2014	1/1	SYR4
Bromodichloromethane	1.1 µg/L No EPA limit set Main supplier: ATWOOD · 1,155 people · 2019	1/1	SYR4
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: ATWOOD · 1,155 people · 2025	1/1	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 Atwood

Supplier	Population served
ATWOOD	1,155

Frequently asked questions about Atwood tap water

Is Atwood tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Atwood. 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 Atwood?

1 public water supplier report drinking-water monitoring for Atwood, Illinois to the EPA. Each is listed above with its population served.

What contaminants are in Atwood's water?

The contaminants EPA monitoring detected in Atwood include Copper, Fluoride, Nitrate, Nitrate-Nitrite, 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.