Clean Water Act discharge permit · NPDES WI0028452
WOLF TREATMENT PLANT, Shawano, WI: NPDES WI0028452 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 9Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
WOLF TREATMENT PLANT, held by Wolf Treatment Plant Commission, holds NPDES permit WI0028452, which discharges to Wolf R. EPA’s file records it issued March 17, 2011 and expiring March 31, 2016. 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 | WOLF TREATMENT PLANT |
|---|---|
| Permittee as filed | Wolf Treatment Plant Commission |
| NPDES ID | WI0028452 |
| 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 | March 17, 2011 |
| Expiration date | March 31, 2016 |
| Address | Shawano, WI 54166 |
| Receiving water | WOLF R |
| Subwatershed | School Section Creek-Wolf River (HUC 040302020901) |
| Other EPA IDs (FRS) | RCRA handler WID980619548 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 3With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Mercury, total recoverable | 2 | 43 | 1 | December 31, 2024 | 77% over the limit |
| Solids, total suspended | 5 | 1 | 1 | October 31, 2023 | 99,999% over the limit |
| Coliform, fecal general | 1 | 35 | 0 | ||
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 7, 2018 | 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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WI0028452.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
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How we handle your data → Privacy
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 WI0028452 there.
Nearby on the register
- Discharge permits in Shawano
- Every permit record in Shawano, A to Z
- Discharge permits in Wisconsin
- Every permit record in Wisconsin, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.