Clean Water Act discharge permit · NPDES WI0030252
SOMERSET WASTEWATER TREATMENT FACILITY, Somerset, WI: NPDES WI0030252 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
SOMERSET WASTEWATER TREATMENT FACILITY, held by SOMERSET WASTEWATER TREATMENT, holds NPDES permit WI0030252, which discharges to Apple R. EPA’s file records it issued July 13, 2011 and expiring September 30, 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 | SOMERSET WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | SOMERSET WASTEWATER TREATMENT |
| NPDES ID | WI0030252 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 13, 2011 |
| Expiration date | September 30, 2016 |
| Address | Somerset, WI 54025 |
| Receiving water | APPLE R |
| Subwatershed | Riverdale Flowage-Apple River (HUC 070300050809) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 5Pollutants on file
- 0Under a numeric limit
- 5With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 0 | 67 | 33 | June 30, 2024 | 2,322% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 68 | 0 | ||
| Solids, total suspended | 0 | 68 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 68 | 0 | ||
| pH | 0 | 34 | 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 |
|---|---|---|
| March 22, 2019 | 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
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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 WI0030252 there.
Nearby on the register
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- Every permit record in Somerset, 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.