F19/100
Brookfield Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 35,489 residents · Wisconsin
What's In Brookfield's Tap Water?
67
Contaminants Tested
1
Exceed EPA Limits
2
Above EPA Goals
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.54 mg/L | 1.30 mg/L | Over Limit |
strontium | 23634.97 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
4
Violations (last 5yr)
3
Unresolved
0
Health-Related
TIER 3Unresolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 31, 2024Enforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 31, 2024Enforcement: Resolving — corrective action underway
TIER 3Unresolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 31, 2024Enforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 31, 2024Enforcement: Informal — resolved cooperativelyVerify on EPA.gov
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
TOWN OF BROOKFIELD SAN DIST 4
Population Served
6,419
Water Source
Groundwater
System ID
WI2680239
BROOKFIELD WATER UTILITY
Population Served
29,070
Water Source
Groundwater
System ID
WI2680253
Frequently Asked Questions About Brookfield Water
Is Brookfield tap water safe to drink?
Brookfield, Wisconsin tap water receives a grade of F (19/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 230 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Brookfield's water?
Of the 67 contaminants tested in Brookfield's water supply, the most notable include Copper (90th percentile), Lead (90th percentile), strontium. 1 contaminant(s) exceed EPA legal limits (MCLs). 3 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Brookfield have any water quality violations?
Yes, Brookfield has 230 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, MON, Other. 32 of these are health-based violations, which are the most serious category.
Do I need a water filter in Brookfield?
Based on EPA data, using a water filter in Brookfield is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Brookfield's tap water come from?
Brookfield's drinking water is sourced from groundwater and supplied by TOWN OF BROOKFIELD SAN DIST 4 and 1 other water system(s). The system serves approximately 35,489 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Brookfield's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Brookfield's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Brookfield's water compare to other cities in Wisconsin?
Brookfield's water quality score of 19/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Wisconsin state page to see how all cities in the state compare.
What should I do if I'm concerned about Brookfield's water quality?
If you have concerns about Brookfield's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (TOWN OF BROOKFIELD SAN DIST 4) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.