Clean Water Act discharge permit · NPDES WI0020222
CEDARBURG CITY WWTF, Cedarburg, WI: NPDES WI0020222 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 11Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
CEDARBURG CITY WWTF, held by CEDARBURG WASTEWATER TREATMENT, holds NPDES permit WI0020222, which discharges to Cedar Creek. EPA’s file records it issued July 1, 2008 and expiring June 30, 2013. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CEDARBURG CITY WWTF |
|---|---|
| Permittee as filed | CEDARBURG WASTEWATER TREATMENT |
| NPDES ID | WI0020222 |
| 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 | July 1, 2008 |
| Expiration date | June 30, 2013 |
| Address | Cedarburg, WI 53012 |
| Receiving water | CEDAR CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Cedar Creek (HUC 040400030304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 11Under a numeric limit
- 5With a violation of any kind
- 3With 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] | 1 | 6 | 5 | February 28, 2022 | 22% over the limit |
| BOD, 5-day, 20 deg. C | 12 | 5 | 5 | August 31, 2025 | 97% over the limit |
| Chloride [as Cl] | 3 | 1 | 1 | July 31, 2012 | 5% over the limit |
| Mercury, total recoverable | 4 | 64 | 0 | ||
| Coliform, fecal general | 1 | 57 | 0 | ||
| Nitrogen, ammonia total [as N] | 12 | 0 | 0 | ||
| Solids, total suspended | 7 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 10, 2025 | WW SSO - Discharge to Waters | ST6 |
| May 17, 2020 | WW SSO - Discharge to Waters | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID WI0020222 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.