BROOKFIELD WATER UTILITY
PWS ID: WI2680253 · Brookfield, Wisconsin 53005
PFAS Detected
5 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
29,070
Total Violations
504
Health-Based Violations
156
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 10,766
- County
- Waukesha
- School/Daycare
- No
- MCL Violations
- 156
- Monitoring Violations
- 332
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Gross Alpha, Excl. Radon and U | MCL | 65 | 2014 |
| Combined Radium (-226 and -228) | MCL | 57 | 2020 |
| Coliform (TCR) | MCL | 34 | 2011 |
| E. COLI | MR | 24 | 2010 |
| Gross Alpha, Excl. Radon and U | MR | 20 | 2024 |
| Nitrate | MR | 13 | 2024 |
| Combined Radium (-226 and -228) | MR | 13 | 2024 |
| Radium-228 | MR | 13 | 2024 |
| Public Notice | Other | 9 | 2020 |
| Coliform (TCR) | MR | 6 | 2008 |
| Dalapon | MR | 5 | 2017 |
| Heptachlor epoxide | MR | 5 | 2017 |
| Heptachlor | MR | 5 | 2017 |
| Atrazine | MR | 5 | 2017 |
| Carbofuran | MR | 5 | 2017 |
| 2,4-D | MR | 5 | 2017 |
| Aldicarb sulfone | MR | 5 | 2017 |
| Dinoseb | MR | 5 | 2017 |
| Picloram | MR | 5 | 2017 |
| Simazine | MR | 5 | 2017 |
| OXAMYL | MR | 5 | 2017 |
| Aldicarb | MR | 5 | 2017 |
| Pentachlorophenol | MR | 5 | 2017 |
| Chlordane | MR | 5 | 2017 |
| BHC-GAMMA | MR | 5 | 2017 |
| Methoxychlor | MR | 5 | 2017 |
| Toxaphene | MR | 5 | 2017 |
| Diquat | MR | 5 | 2017 |
| Endothall | MR | 5 | 2017 |
| Glyphosate | MR | 5 | 2017 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 33 of 1020 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFTA | 7/27/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| lithium | 7/27/2023 | 9.2000 µg/L | 9 µg/L | Detected |
| PFMPA | 7/27/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTrDA | 7/27/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFHpS | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 7/27/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 7/27/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 7/27/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 7/27/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 7/27/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 7/27/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/27/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxS | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 7/27/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 7/27/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFMBA | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/27/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBS | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 7/27/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 7/27/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 7/27/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 7/27/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 7/27/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 7/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 7/23/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 7/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 7/23/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 7/23/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFPeS | 7/23/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 7/23/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFMBA | 7/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 7/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 7/23/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 7/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 7/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 7/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFEESA | 7/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 7/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| lithium | 7/23/2025 | 10.0000 µg/L | 9 µg/L | Detected |
| 9Cl-PF3ONS | 7/23/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 7/23/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 7/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
PFAS data from EPA UCMR5 monitoring program (2023-2025).
This data is provided for informational purposes only.