Tap WaterIndex

← Illinois

Tap water quality report

Nokomis, IL

EPA monitoring detected 26 contaminants across the 1 water supplier serving Nokomis. 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.

1
water supplier
2,370
people served
26
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Nokomis'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
Nitrate
1400 µg/L 14%
of the EPA limit 10000 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Fluoride
1044.4 µg/L 26%
of the EPA limit 4000 µg/L
Main supplier: NOKOMIS · 2,370 people · 2018
1/1 SYR4
Copper
254 µg/L 20%
of the EPA limit 1300 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Barium
64.1 µg/L 3.2%
of the EPA limit 2000 µg/L
Main supplier: NOKOMIS · 2,370 people · 2018
1/1 SYR4
TTHM
51.8 µg/L 65%
of the EPA limit 80 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
cis-1,2-Dichloroethylene
30.5 µg/L 44%
of the EPA limit 70 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Vinyl Chloride
19.4 µg/L 970%
of the EPA limit, at the 95th percentile of samples — 2 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
trans-1,2-Dichloroethylene
18.6 µg/L 19%
of the EPA limit 100 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Dibromochloromethane
18 µg/L
No EPA limit set
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Bromodichloromethane
16.652 µg/L
No EPA limit set
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Chloroform
11.888 µg/L
No EPA limit set
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
9.409 µg/L 16%
of the EPA limit 60 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Bromoform
7.87 µg/L
No EPA limit set
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Chromium
6.1 µg/L 6.1%
of the EPA limit 100 µg/L
Main supplier: NOKOMIS · 2,370 people · 2018
1/1 SYR4
Benzene
5.2 µg/L 104%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Dibromoacetic Acid
4.779 µg/L
No EPA limit set
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Lead
3.325 µg/L 22%
of the EPA limit 15 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Dichloroacetic Acid
3.211 µg/L
No EPA limit set
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Trichloroacetic Acid
2.95 µg/L
No EPA limit set
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Arsenic
2.3 µg/L 23%
of the EPA limit 10 µg/L
Main supplier: NOKOMIS · 2,370 people · 2018
1/1 SYR4
Trichloroethylene
2.117 µg/L 42%
of the EPA limit 5 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Toluene
1.6 µg/L 0.2%
of the EPA limit 1000 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Tetrachloroethylene
1.3 µg/L 26%
of the EPA limit 5 µg/L
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.17 µg/L
No EPA limit set
Main supplier: NOKOMIS · 2,370 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
0.9370 pCi/L 19%
of the EPA limit 5 pCi/L
Main supplier: NOKOMIS · 2,370 people · 2015
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: NOKOMIS · 2,370 people · 2026
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 Nokomis

SupplierPopulation served
NOKOMIS 2,370

Frequently asked questions about Nokomis tap water

Is Nokomis tap water safe to drink?

EPA testing detected 26 contaminants in the water serving Nokomis. 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 Nokomis?

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

What contaminants are in Nokomis's water?

The contaminants EPA monitoring detected in Nokomis include Nitrate, Fluoride, Copper, Barium, TTHM. 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.