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Tap water quality report

Wenona, IL

EPA monitoring detected 17 contaminants across the 1 water supplier serving Wenona. 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
974
people served
17
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Wenona'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
Fluoride
1133.85 µg/L 28%
of the EPA limit 4000 µg/L
Main supplier: WENONA · 974 people · 2017
1/1 SYR4
Copper
383 µg/L 29%
of the EPA limit 1300 µg/L
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
Nitrate
260 µg/L 2.6%
of the EPA limit 10000 µg/L
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
Nitrate-Nitrite
253 µg/L 2.5%
of the EPA limit 10000 µg/L
Main supplier: WENONA · 974 people · 2018
1/1 SYR4
Lead
39.4 µg/L 263%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
TTHM
12.7235 µg/L 16%
of the EPA limit 80 µg/L
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
Barium
10.83 µg/L 0.5%
of the EPA limit 2000 µg/L
Main supplier: WENONA · 974 people · 2017
1/1 SYR4
Bromoform
7.5665 µg/L
No EPA limit set
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
Selenium
5.83 µg/L 12%
of the EPA limit 50 µg/L
Main supplier: WENONA · 974 people · 2017
1/1 SYR4
Dibromochloromethane
3.927 µg/L
No EPA limit set
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
3.1255 pCi/L 63%
of the EPA limit 5 pCi/L
Main supplier: WENONA · 974 people · 2017
1/1 SYR4
Arsenic
2.77 µg/L 28%
of the EPA limit 10 µg/L
Main supplier: WENONA · 974 people · 2017
1/1 SYR4
Dibromoacetic Acid
1.7295 µg/L
No EPA limit set
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
1.7295 µg/L 2.9%
of the EPA limit 60 µg/L
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
Bromodichloromethane
1.314 µg/L
No EPA limit set
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
Chloroform
0.8550 µg/L
No EPA limit set
Main supplier: WENONA · 974 people · 2019
1/1 SYR4
Lead
0.0107 mg/L 71%
of the EPA limit 0.0150 mg/L
Main supplier: WENONA · 974 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 Wenona

SupplierPopulation served
WENONA 974

Frequently asked questions about Wenona tap water

Is Wenona tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Wenona. 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 Wenona?

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

What contaminants are in Wenona's water?

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