Clean Water Act discharge permit · NPDES WI0029971
WAUKESHA CITY, Waukesha, WI: NPDES WI0029971 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
WAUKESHA CITY holds NPDES permit WI0029971, which discharges to Fox River. EPA’s file records it issued May 9, 2008 and expiring December 31, 2012. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WAUKESHA CITY |
|---|---|
| Permittee as filed | WAUKESHA CITY |
| NPDES ID | WI0029971 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 9, 2008 |
| Expiration date | December 31, 2012 |
| Address | Waukesha, WI 53186 |
| Receiving water | FOX RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | City of Waukesha-Fox River (HUC 071200060105) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 16Under a numeric limit
- 10With a violation of any kind
- 5With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Oxygen, dissolved [DO] | 2 | 12 | 12 | February 28, 2026 | 20% over the limit |
| BOD, 5-day, 20 deg. C | 12 | 2 | 2 | April 30, 2026 | 8% over the limit |
| Solids, total suspended | 6 | 2 | 2 | August 31, 2015 | 215% over the limit |
| Coliform, fecal general | 1 | 3 | 1 | June 30, 2008 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 36 | 1 | 1 | May 31, 2006 | 67% over the limit |
| Nickel, total recoverable | 4 | 170 | 0 | ||
| Cadmium, total recoverable | 4 | 170 | 0 | ||
| Lead, total recoverable | 4 | 170 | 0 | ||
| Chromium, total recoverable | 4 | 170 | 0 | ||
| Temperature, water deg. fahrenheit | 0 | 39 | 0 | ||
| Zinc, total recoverable | 4 | 0 | 0 | ||
| Copper, total recoverable | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| Mercury, total recoverable | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| Chloride [as Cl] | 2 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 25Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 10, 2025 | WW SSO - Discharge to Waters | ST6 |
| February 3, 2024 | WW SSO - Discharge to Waters | ST6 |
| July 29, 2023 | WW SSO - Discharge to Waters | ST6 |
| June 26, 2023 | WW SSO - Discharge to Waters | ST6 |
| March 25, 2023 | WW SSO - Discharge to Waters | ST6 |
| October 15, 2022 | WW SSO - Discharge to Waters | ST6 |
| September 15, 2022 | WW SSO - Discharge to Waters | ST6 |
| September 12, 2022 | WW SSO - Discharge to Waters | ST6 |
| September 10, 2021 | WW SSO - Discharge to Waters | ST6 |
| September 7, 2021 | WW SSO - Discharge to Waters | ST6 |
| July 21, 2021 | WW SSO - Discharge to Waters | ST6 |
| June 15, 2021 | WW SSO - Discharge to Waters | ST6 |
| February 4, 2021 | WW SSO - Discharge to Waters | ST6 |
| August 28, 2020 | WW SSO - Discharge to Waters | ST6 |
| August 24, 2020 | WW SSO - Discharge to Waters | ST6 |
| June 12, 2020 | WW SSO - Discharge to Waters | ST6 |
| June 1, 2020 | WW SSO - Discharge to Waters | ST6 |
| October 8, 2019 | WW SSO - Discharge to Waters | ST6 |
| June 14, 2019 | WW SSO - Discharge to Waters | ST6 |
| January 3, 2019 | WW SSO - Discharge to Waters | ST6 |
| September 13, 2018 | WW SSO - Discharge to Waters | ST6 |
| August 10, 2017 | WW SSO - Discharge to Waters | ST6 |
| June 23, 2017 | WW SSO - Discharge to Waters | ST6 |
| June 21, 2017 | WW SSO - Discharge to Waters | ST6 |
| June 16, 2017 | WW SSO - Discharge to Waters | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.