Oak Creek, WI · Milwaukee County
OAK CREEK WATERWORKS Water System
Current status
1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Wisconsin’s official records. Always confirm current status with Wisconsin before making decisions based on this information.
System facts
- System ID (PWSID)
- WI2410172
- System type
- Community Water System
- Population served
- 32,104
- Service connections
- 11,890
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Public Notification Violation for NPDWR Violation
—Public Notice
October 17, 2024
UnaddressedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2021 – March 31, 2021
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2021 – March 31, 2021
ResolvedMaximum Contaminant Level Violation, Average
Health-basedTTHM
July 1, 2018 – September 30, 2018
ResolvedMonitoring and Reporting (DBP)
—TTHM
October 1, 2013 – December 31, 2013
ResolvedMonitoring, Regular
—Fluoride
January 1, 2002 – September 30, 2002
ResolvedMonitoring, Regular
—Chlordane
January 1, 2002 – September 30, 2002
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
January 1, 2002 – September 30, 2002
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2002 – September 30, 2002
ResolvedMonitoring, Regular
—Toxaphene
January 1, 2002 – September 30, 2002
ResolvedMonitoring, Regular
—Atrazine
January 1, 2002 – September 30, 2002
Resolved
Unaddressed no corrective action on record yetResolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 17, 2024 | Public Notification Violation for NPDWR Violation | Public Notice | — | Unaddressed |
| January 1, 2021 – March 31, 2021 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| January 1, 2021 – March 31, 2021 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| July 1, 2018 – September 30, 2018 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Resolved |
| October 1, 2013 – December 31, 2013 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2002 – September 30, 2002 | Monitoring, Regular | Fluoride | — | Resolved |
| January 1, 2002 – September 30, 2002 | Monitoring, Regular | Chlordane | — | Resolved |
| January 1, 2002 – September 30, 2002 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| January 1, 2002 – September 30, 2002 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| January 1, 2002 – September 30, 2002 | Monitoring, Regular | Toxaphene | — | Resolved |
| January 1, 2002 – September 30, 2002 | Monitoring, Regular | Atrazine | — | Resolved |
Unaddressed no corrective action on record yetResolved addressed and confirmed by the state
Enforcement actions
No enforcement actions on record for this system.
Contact
OAK CREEK CITY CLERK - CATHERINE ROESKE
Phone not on record
Oak Creek, WI 53154