C
56

Fair Water Quality

Brookfield, WI 53045

Waukesha County · Population served: 35,489 · Data updated March 2026

Water Systems Serving This Area

🌊
TOWN OF BROOKFIELD SAN DIST 4
Groundwater · Pop. 6,419
PWSID: WI2680239
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BROOKFIELD WATER UTILITY
Groundwater · Pop. 29,070
PWSID: WI2680253

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
13.0
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

5 detected All below limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFBS7.1 ppt2000 ppt100 pptBelow limit
PFBS4.7 ppt2000 ppt100 pptBelow limit
PFPeA4.4 pptNo standardUnregulated
PFHxA3.3 pptNo standard400 pptUnregulated
PFHxS3.2 ppt10 ppt10 pptBelow limit

Violation History (Last 5 Years)

16Total (5yr)
0Health-Based
13Major

Water Quality Summary

Understanding Your Water in Brookfield

Tap water quality in Brookfield, Wisconsin (53045) receives an overall grade of C (Fair) with a score of 56 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 22 points below the Wisconsin state average of 78. Compared to the national average (75), this area scores significantly lower. The area is served by 2 water systems providing water to approximately 35,489 people, using groundwater sources. Testing has found elevated levels of Lead that warrant attention. PFAS testing detected 5 compounds, all currently below EPA limits. The area has 16 violations over the past 5 years, though none were classified as health-based.

Your Score 56/100 C
vs State 22 pts below Wisconsin avg (78)
vs National 19 pts below national avg (75)

What a Grade C Means

A score of 56/100 indicates fair water quality in Brookfield, WI. While the water meets minimum federal standards, there are noteworthy concerns — either elevated contaminant levels approaching regulatory limits, a moderate violation history, or both. Residents may want to review specific contaminant data and consider targeted filtration, especially for sensitive groups like children and pregnant women.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Tap water in Brookfield, Wisconsin receives a grade of C (Fair) with a score of 56/100. While it generally meets minimum federal standards, there are some areas of concern including violation history or elevated contaminant levels. Sensitive populations (children, pregnant women, elderly) may want to consider additional filtration.

ZIP code 53045 is served by 2 water systems using groundwater sources, providing water to approximately 35,489 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead was detected at 13.0 ppb in Brookfield, Wisconsin. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

5 PFAS compounds were detected in water serving Brookfield, Wisconsin, but all are currently below EPA limits. While levels are within regulatory standards, some health organizations recommend minimizing any PFAS exposure. Activated carbon or reverse osmosis filters can reduce PFAS levels.

Water systems serving Brookfield, Wisconsin have received 16 violations in the last 5 years. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (lead, PFAS), residents in Brookfield, Wisconsin should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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