States ›Wisconsin ›Waukesha County ›Brookfield

Brookfield, WI Tap Water Quality 2026

Water quality report for Brookfield, WI — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Brookfield's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Brookfield Water Utility PWSID: WI2680253 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.50 ppb, 10% of the action level and no violations are open. No PFAS was detected.

C

Brookfield earns a C for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 1.50 ppb — 10% of the federal action level
PFAS tested, none detected
61 violations since 2015, 8 health-based
No violations currently open
Brookfield's lead level vs. all Wisconsin community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.50 ppb — 10% of the federal action level
✓ Lower lead than 65% of Wisconsin utilities
Population Served
40277
~10766 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
61 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
10% of EPA action level
1.50 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
118.5% of EPA action level
1,540 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 1.50 ppb, 10% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2026 Unaddressed
Gross Alpha, Excl. Radon and U MCL EXCEEDANCE 15.83 PCI/L 15 pCi/L 2026 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2024 Archived
Radium-228 MONITORING AND REPORTING — — 2024 Archived
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2024 Archived
Nitrate MONITORING AND REPORTING — 10 mg/L 2024 Resolved
Public Notice OTHER — — 2020 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6.18 PCI/L 5 pCi/L 2020 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6.775 PCI/L 5 pCi/L 2020 Resolved
Public Notice OTHER — — 2019 Resolved
Public Notice OTHER — — 2019 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2019 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6.7 PCI/L 5 pCi/L 2019 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7.18 PCI/L 5 pCi/L 2019 Resolved
Mercury MONITORING AND REPORTING — 0.002 mg/L 2019 Resolved
Thallium, Total MONITORING AND REPORTING — 0.002 mg/L 2019 Resolved
Beryllium, Total MONITORING AND REPORTING — 0.004 mg/L 2019 Resolved
Antimony, Total MONITORING AND REPORTING — 0.006 mg/L 2019 Resolved
Selenium MONITORING AND REPORTING — 0.05 mg/L 2019 Resolved
Nitrite MONITORING AND REPORTING — 1 mg/L 2019 Resolved
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2019 Resolved
Barium MONITORING AND REPORTING — 2 mg/L 2019 Resolved
Cadmium MONITORING AND REPORTING — 0.005 mg/L 2019 Resolved
Nickel MONITORING AND REPORTING — — 2019 Resolved
Chromium MONITORING AND REPORTING — 0.1 mg/L 2019 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2019 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7.18 PCI/L 5 pCi/L 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6.75 PCI/L 5 pCi/L 2018 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6.75 PCI/L 5 pCi/L 2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Resolved
Aldicarb sulfone MONITORING AND REPORTING — — 2017 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2017 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2017 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2017 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2017 Resolved
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2017 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2017 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2017 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2017 Resolved
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2017 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2017 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2017 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2017 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2017 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2017 Resolved
Aldicarb sulfoxide MONITORING AND REPORTING — — 2017 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2017 Resolved
Aldicarb MONITORING AND REPORTING — — 2017 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2017 Resolved
LASSO MONITORING AND REPORTING — — 2017 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2017 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2017 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2017 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2017 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2017 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2017 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2015 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2015 Resolved
Radium-228 MONITORING AND REPORTING — — 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

61 violations are on record since 2015, of which 8 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Brookfield Water Utility
PWSID WI2680253
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 40,277
Service connections 10,766
Systems serving this area 6
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Brookfield tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.50 ppb, 10% of the action level.
Does Brookfield water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Brookfield? ▼
Brookfield Water Utility (PWSID WI2680253), one of 6 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2023-09-06. No significant deficiencies were recorded.

What Should Brookfield Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in Wisconsin

Waukesha, Wi Tap Water Quality 2026 Waukesha Menomonee Falls, Wi Tap Water Quality 2026 Waukesha New Berlin, Wi Tap Water Quality 2026 Waukesha Muskego, Wi Tap Water Quality 2026 Waukesha Oconomowoc, Wi Tap Water Quality 2026 Waukesha Sussex, Wi Tap Water Quality 2026 Waukesha