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Tap water quality report

Whitefish Bay, WI

EPA monitoring detected 10 contaminants across the 1 water supplier serving Whitefish Bay. 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
14,272
people served
10
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Whitefish Bay'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
TTHM
25.744 µg/L 32%
of the EPA limit 80 µg/L
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 people · 2019
1/1 SYR4
Chloroform
13.05 µg/L
No EPA limit set
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
11.943 µg/L 20%
of the EPA limit 60 µg/L
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 people · 2019
1/1 SYR4
Bromodichloromethane
8.52 µg/L
No EPA limit set
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 people · 2019
1/1 SYR4
Dichloroacetic Acid
6.8 µg/L
No EPA limit set
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 people · 2019
1/1 SYR4
Trichloroacetic Acid
4.405 µg/L
No EPA limit set
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 people · 2019
1/1 SYR4
Dibromochloromethane
4 µg/L
No EPA limit set
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.012 µg/L
No EPA limit set
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 people · 2019
1/1 SYR4
Dibromoacetic Acid
0.9760 µg/L
No EPA limit set
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 people · 2019
1/1 SYR4
Lead
0.0047 mg/L 31%
of the EPA limit 0.0150 mg/L
Main supplier: WHITEFISH BAY WATERWORKS · 14,272 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 Whitefish Bay

SupplierPopulation served
WHITEFISH BAY WATERWORKS 14,272

Frequently asked questions about Whitefish Bay tap water

Is Whitefish Bay tap water safe to drink?

EPA testing detected 10 contaminants in the water serving Whitefish Bay. 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 Whitefish Bay?

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

What contaminants are in Whitefish Bay's water?

The contaminants EPA monitoring detected in Whitefish Bay include TTHM, Chloroform, Total Haloacetic Acids (HAA5), Bromodichloromethane, Dichloroacetic Acid. 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.