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Tap water quality report

Niles, IL

EPA monitoring detected 13 contaminants across the 2 water suppliers serving Niles. 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.

2
water suppliers
29,350
people served
13
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Niles'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
660.95 µg/L 51%
of the EPA limit 1300 µg/L
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
TTHM
53.2 µg/L 67%
of the EPA limit 80 µg/L
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Chloroform
31.66 µg/L
No EPA limit set
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
21.84 µg/L 36%
of the EPA limit 60 µg/L
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Bromodichloromethane
15.54 µg/L
No EPA limit set
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Lead
12.79 µg/L 85%
of the EPA limit 15 µg/L
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Dichloroacetic Acid
11.2 µg/L
No EPA limit set
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Trichloroacetic Acid
11.12 µg/L
No EPA limit set
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Dibromochloromethane
6.926 µg/L
No EPA limit set
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Monochloroacetic Acid
2.535 µg/L
No EPA limit set
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Monobromoacetic Acid
1.664 µg/L
No EPA limit set
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Dibromoacetic Acid
1.5 µg/L
No EPA limit set
Main supplier: NILES · 29,350 people · 2019
1/2 SYR4
Lead
0.0099 mg/L 66%
of the EPA limit 0.0150 mg/L
Main supplier: NILES · 29,350 people · 2026
1/2 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 Niles

SupplierPopulation served
NILES 29,350
MORTON GROVE - NILES WATER COMMISSION 0

Frequently asked questions about Niles tap water

Is Niles tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Niles. 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 Niles?

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

What contaminants are in Niles's water?

The contaminants EPA monitoring detected in Niles include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), 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.