Tap Water Results

Is Brookfield, WI tap water safe?

Data: U.S. EPA · How we read the data · How we check it

Summary

No federal limits exceeded in EPA data for Brookfield Water Utility. 4 PFAS were detected below the limits.

2 public water systems serve parts of Brookfield. The largest, Brookfield Water Utility, serves 29,070 people. Your water bill names your system.

Largest system

Brookfield Water Utility

29,070 people · Groundwater · EPA ID WI2680253

PFASHighest averageLimitStatus
PFOA
Not detected
–4 pptNot detected
PFOS
Not detected
–4 pptNot detected
PFHxS
Detected, below limit
1.6 ppt10 pptDetected, below limit
PFNA
Not detected
–10 pptNot detected
HFPO-DA (GenX)
Not detected
–10 pptNot detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 1.5 ppb at the 90th percentile (Sep 2023, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 7

Across Wisconsin, 18 of 196 water systems EPA tested had PFAS above a 2024 federal limit, and 4 systems were above the lead action level in results from the last five years. Wisconsin results.

Brookfield homes and lead pipes

58%
of homes built before 1980 (Wisconsin 57%, US 50%)
6%
built before 1950 (Wisconsin 23%)
17%
of households rent (Wisconsin 32%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Brookfield city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Brookfield

  • Town of Brookfield San District 4
    6,419 people · Groundwater · Wisconsin · lists this city
    No PFAS above limits

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Wauwatosa 4 mi
Wauwatosa Waterworks
Wauwatosa WaterworksNone above limits8.4 ppb
West Allis 6 mi
West Allis Waterworks
West Allis WaterworksNone above limits2.4 ppb
New Berlin 6 mi
New Berlin Water Utility
New Berlin Water UtilityNone above limits0.33 ppb
Menomonee Falls 7 mi
Menomonee Falls Water Works – Surface Water
Menomonee Falls Water Works – Surface WaterNone above limits2.1 ppb
Waukesha 7 mi
Waukesha Water Utility
Waukesha Water UtilityNone above limits0.56 ppb
Milwaukee 8 mi
Milwaukee Waterworks
Milwaukee WaterworksNone above limits5.3 ppb
Brookfield ZIP codes (2)
  • 53005
  • 53045

Questions

Is Brookfield tap water safe to drink?

Brookfield Water Utility had 7 health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Brookfield, WI?

2 public water systems serve parts of Brookfield. The largest is Brookfield Water Utility (29,070 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Brookfield tap water have PFAS?

Brookfield Water Utility had 4 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Brookfield homes have lead pipes?

Census estimates put 58% of Brookfield homes as built before 1980 (Wisconsin: 57%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Brookfield Water Utility's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.