Public water system record
Brookfield Water Utility
Serves Brookfield, Waukesha County, WI · 29,070 people served
Federal records show 7 health-based violations and 49 monitoring/reporting issues for Brookfield Water Utility in the last ten years. The most serious issue in this window was a resolved Combined Radium (-226 and -228) violation.
System profile
Source water
Groundwater
ZIP
53005
EPA system ID
WI2680253
- Health-based violations, last 10 years
- 7
- Resolved
- 7
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 49
Key facts
- Brookfield Water Utility draws water from 21 wells.
- Highest measured level in the last 10 years: Combined Radium (-226 and -228), 7.18 pCi/L, federal limit 5 pCi/L (1.4 times the limit), 2019.
- Most recent formal enforcement: signed compliance agreement by Wisconsin, December 2003.
- Record on file since 1984, with 25 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 485 unknown out of 13,817 service lines.
Check whether Brookfield Water Utility serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.18 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Apr 1, 2020 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.775 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Jan 1, 2020 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.7 pCi/L, federal limit 5 pCi/L (1.3 times the limit)
|
340 | Oct 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7.18 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Jan 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7.18 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Oct 1, 2018 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.75 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Jul 1, 2018 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.75 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Apr 1, 2018 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Radium-228
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Public Notice
OTHER
|
Apr 24, 2020 | Resolved |
|
Public Notice
OTHER
|
Dec 31, 2019 | Resolved |
|
Public Notice
OTHER
|
Dec 31, 2019 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Nitrite
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2018 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Aldicarb
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Aldicarb sulfoxide
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Aldicarb sulfone
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 1984
EPA's records for Brookfield Water Utility go back to 1984. Before October 19, 2016 they list 25 health-based violations (24 resolved, 1 archived by EPA without a recorded fix) and 90 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 3 | 0 |
| 1990s | 12 | 28 |
| 2000s | 4 | 51 |
| 2010 to October 18, 2016 | 6 | 11 |
| October 19, 2016 to 2019 | 5 | 44 |
| 2020s | 2 | 5 |
Most recent health-based violation before October 19, 2016: Gross Alpha, Excl. Radon and U, began January 2014, Resolved.
Show all 25 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 16 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
Jan 1, 2014 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 22.31 pCi/L, federal limit 15 pCi/L (1.5 times the limit)
|
Oct 1, 2013 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 20.56 pCi/L, federal limit 15 pCi/L (1.4 times the limit)
|
Jul 1, 2013 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 18.19 pCi/L, federal limit 15 pCi/L (1.2 times the limit)
|
Apr 1, 2013 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 15.59 pCi/L, federal limit 15 pCi/L (at or just above the limit)
|
Jan 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1999 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.7 pCi/L, federal limit 5 pCi/L (1.1 times the limit)
|
Jan 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 1998 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 36 pCi/L, federal limit 15 pCi/L (2.4 times the limit)
|
Jan 1, 1998 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.4 pCi/L, federal limit 5 pCi/L (1.3 times the limit)
|
Jan 1, 1998 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 39 pCi/L, federal limit 15 pCi/L (2.6 times the limit)
|
Jan 1, 1997 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 8.2 pCi/L, federal limit 5 pCi/L (1.6 times the limit)
|
Jan 1, 1997 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 45.5 pCi/L, federal limit 15 pCi/L (3 times the limit)
|
Jan 1, 1996 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 1996 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 32.9 pCi/L, federal limit 15 pCi/L (2.2 times the limit)
|
Jan 1, 1995 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7.1 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
Jan 1, 1994 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 37.5 pCi/L, federal limit 15 pCi/L (2.5 times the limit)
|
Jan 1, 1994 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 1984 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jun 1, 1984 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
May 25, 1984 | Resolved |
Enforcement actions
Wisconsin regulators took 2 formal enforcement actions against Brookfield Water Utility and issued 1 boil water order between 2000 and 2003, filed as 11 records in EPA's data. The most recent was a signed compliance agreement in December 2003.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 15, 2003 | Wisconsin | Signed compliance agreement | 9 violations (9 health-based): Gross Alpha, Excl. Radon and U, Combined Radium (-226 and -228) |
| Dec 15, 2003 | Wisconsin | Compliance order (no penalty) | 1 violation (1 health-based): Combined Radium (-226 and -228) |
| Mar 30, 2000 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
What the violations mean
Combined Radium (-226 and -228)
7 incidentsTest results for Combined Radium (-226 and -228) were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Where the water comes from
Brookfield Water Utility draws water from 21 wells.
Annual water quality report
Brookfield Water Utility must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Wisconsin.
Certified drinking water labs by state EPA guidance for private wells