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Herscher, IL

EPA monitoring detected 16 contaminants across the 1 water supplier serving Herscher. 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
1,600
people served
16
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Herscher'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
497.4 µg/L 12%
of the EPA limit 4000 µg/L
Main supplier: HERSCHER · 1,600 people · 2018
1/1 SYR4
Copper
290 µg/L 22%
of the EPA limit 1300 µg/L
Main supplier: HERSCHER · 1,600 people · 2018
1/1 SYR4
Nitrate
160 µg/L 1.6%
of the EPA limit 10000 µg/L
Main supplier: HERSCHER · 1,600 people · 2019
1/1 SYR4
Nitrate-Nitrite
160 µg/L 1.6%
of the EPA limit 10000 µg/L
Main supplier: HERSCHER · 1,600 people · 2019
1/1 SYR4
Lead
23 µg/L 153%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: HERSCHER · 1,600 people · 2018
1/1 SYR4
Barium
16.5 µg/L 0.8%
of the EPA limit 2000 µg/L
Main supplier: HERSCHER · 1,600 people · 2018
1/1 SYR4
TTHM
8.045 µg/L 10%
of the EPA limit 80 µg/L
Main supplier: HERSCHER · 1,600 people · 2019
1/1 SYR4
Chloroform
4.86 µg/L
No EPA limit set
Main supplier: HERSCHER · 1,600 people · 2019
1/1 SYR4
Bromodichloromethane
3.4 µg/L
No EPA limit set
Main supplier: HERSCHER · 1,600 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
3.32 µg/L 5.5%
of the EPA limit 60 µg/L
Main supplier: HERSCHER · 1,600 people · 2019
1/1 SYR4
Dichloroacetic Acid
2.365 µg/L
No EPA limit set
Main supplier: HERSCHER · 1,600 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
2.277 pCi/L 46%
of the EPA limit 5 pCi/L
Main supplier: HERSCHER · 1,600 people · 2017
1/1 SYR4
Trichloroacetic Acid
1.585 µg/L
No EPA limit set
Main supplier: HERSCHER · 1,600 people · 2019
1/1 SYR4
Dibromochloromethane
1.5 µg/L
No EPA limit set
Main supplier: HERSCHER · 1,600 people · 2019
1/1 SYR4
Arsenic
0.7280 µg/L 7.3%
of the EPA limit 10 µg/L
Main supplier: HERSCHER · 1,600 people · 2018
1/1 SYR4
Lead
0.0106 mg/L 71%
of the EPA limit 0.0150 mg/L
Main supplier: HERSCHER · 1,600 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 Herscher

SupplierPopulation served
HERSCHER 1,600

Frequently asked questions about Herscher tap water

Is Herscher tap water safe to drink?

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

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

What contaminants are in Herscher's water?

The contaminants EPA monitoring detected in Herscher 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.