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Tap water quality report

Brookfield, WI

EPA monitoring detected 25 contaminants across the 2 water suppliers serving Brookfield. 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.

2
water suppliers
35,489
people served
25
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Brookfield'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
Copper
1100 µg/L 85%
of the EPA limit 1300 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Nitrate-Nitrite
856 µg/L 8.6%
of the EPA limit 10000 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2017
1/2 SYR4
Nitrate
853.5 µg/L 8.5%
of the EPA limit 10000 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Fluoride
793 µg/L 20%
of the EPA limit 4000 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Barium
153 µg/L 7.7%
of the EPA limit 2000 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
Highest in the city: 240 µg/L — TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2017
2/2 SYR4
TTHM
33.3 µg/L 42%
of the EPA limit 80 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
Highest in the city: 36.7 µg/L — TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2019
2/2 SYR4
Gross Alpha, Excl. Radon And U
16.25 pCi/L 108%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Dibromochloromethane
9.75 µg/L
No EPA limit set
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
Highest in the city: 15.15 µg/L — TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2019
2/2 SYR4
Lead
11.35 µg/L 76%
of the EPA limit 15 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
Highest in the city: 13.55 µg/L — TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2017
2/2 SYR4
Bromodichloromethane
12.2 µg/L
No EPA limit set
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
9.658 µg/L 16%
of the EPA limit 60 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Chloroform
8.875 µg/L
No EPA limit set
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
8.07 pCi/L 161%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Bromoform
5.39 µg/L
No EPA limit set
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
Highest in the city: 7.18 µg/L — TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2019
2/2 SYR4
Arsenic
5.62 µg/L 56%
of the EPA limit 10 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2017
2/2 SYR4
Dichloroacetic Acid
4.9 µg/L
No EPA limit set
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Dibromoacetic Acid
3.55 µg/L
No EPA limit set
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
Highest in the city: 4.42 µg/L — TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2019
2/2 SYR4
Trichloroacetic Acid
2.94 µg/L
No EPA limit set
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
2/2 SYR4
Di(2-ethylhexyl) Phthalate
2.3 µg/L 38%
of the EPA limit 6 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2017
1/2 SYR4
Tetrachloroethylene
2.1 µg/L 42%
of the EPA limit 5 µg/L
Highest in the city: TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2019
1/2 SYR4
Monobromoacetic Acid
0.8990 µg/L
No EPA limit set
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2019
Highest in the city: 1.655 µg/L — TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2019
2/2 SYR4
Trichloroethylene
1.1 µg/L 22%
of the EPA limit 5 µg/L
Highest in the city: TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2019
1/2 SYR4
Combined Uranium
0.9683 µg/L 3.2%
of the EPA limit 30 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2017
1/2 SYR4
Mercury
0.1500 µg/L 7.5%
of the EPA limit 2 µg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2017
1/2 SYR4
Lead
0.0015 mg/L 10%
of the EPA limit 0.0150 mg/L
Main supplier: BROOKFIELD WATER UTILITY · 29,070 people · 2023
Highest in the city: 0.0034 mg/L — TOWN OF BROOKFIELD SAN DIST 4 · 6,419 people · 2023
2/2 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 Brookfield

SupplierPopulation served
BROOKFIELD WATER UTILITY 29,070
TOWN OF BROOKFIELD SAN DIST 4 6,419

Frequently asked questions about Brookfield tap water

Is Brookfield tap water safe to drink?

EPA testing detected 25 contaminants in the water serving Brookfield. 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 Brookfield?

2 public water suppliers report drinking-water monitoring for Brookfield, Wisconsin to the EPA. Each is listed above with its population served.

What contaminants are in Brookfield's water?

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