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Tap water quality report

Berlin, WI

EPA monitoring detected 23 contaminants across the 1 water supplier serving Berlin. 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
5,524
people served
23
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Berlin'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
4075 µg/L 41%
of the EPA limit 10000 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Nitrate-Nitrite
2510 µg/L 25%
of the EPA limit 10000 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2017
1/1 SYR4
Fluoride
1299 µg/L 32%
of the EPA limit 4000 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Copper
681.5 µg/L 52%
of the EPA limit 1300 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2017
1/1 SYR4
Barium
64.5 µg/L 3.2%
of the EPA limit 2000 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2017
1/1 SYR4
TTHM
19.195 µg/L 24%
of the EPA limit 80 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Lead
16.35 µg/L 109%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2017
1/1 SYR4
Gross Alpha, Excl. Radon And U
12.33 pCi/L 82%
of the EPA limit 15 pCi/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Chloroform
6.265 µg/L
No EPA limit set
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Bromodichloromethane
6.15 µg/L
No EPA limit set
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
5.7 pCi/L 114%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Gross Beta Particle Activity
4.518 pCi/L
No EPA limit set
Main supplier: BERLIN WATERWORKS · 5,524 people · 2013
1/1 SYR4
Dibromochloromethane
4.45 µg/L
No EPA limit set
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
3.1275 µg/L 5.2%
of the EPA limit 60 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Chromium
1.38 µg/L 1.4%
of the EPA limit 100 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2017
1/1 SYR4
Bromoform
1.265 µg/L
No EPA limit set
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Dichloroacetic Acid
1.204 µg/L
No EPA limit set
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Dibromoacetic Acid
1.075 µg/L
No EPA limit set
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Combined Uranium
0.9986 µg/L 3.3%
of the EPA limit 30 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Trichloroacetic Acid
0.4960 µg/L
No EPA limit set
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Monobromoacetic Acid
0.3700 µg/L
No EPA limit set
Main supplier: BERLIN WATERWORKS · 5,524 people · 2019
1/1 SYR4
Thallium, Total
0.2480 µg/L 12%
of the EPA limit 2 µg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2017
1/1 SYR4
Lead
0.00055 mg/L 3.7%
of the EPA limit 0.0150 mg/L
Main supplier: BERLIN WATERWORKS · 5,524 people · 2023
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 Berlin

SupplierPopulation served
BERLIN WATERWORKS 5,524

Frequently asked questions about Berlin tap water

Is Berlin tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Berlin. 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 Berlin?

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

What contaminants are in Berlin's water?

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