Clean Water Act discharge permit · NPDES WI0020427
PORTAGE WASTEWATER TREATMENT FACILITY, Portage, WI: NPDES WI0020427 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 11Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
PORTAGE WASTEWATER TREATMENT FACILITY, held by PORTAGE WASTEWATER TREATMENT F, holds NPDES permit WI0020427, which discharges to Wisconsin R. EPA’s file records it issued March 30, 2010 and expiring March 31, 2015. 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 | PORTAGE WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | PORTAGE WASTEWATER TREATMENT F |
| NPDES ID | WI0020427 |
| 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 30, 2010 |
| Expiration date | March 31, 2015 |
| Address | Portage, WI 53901 |
| Receiving water | WISCONSIN R |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Long Lake-Wisconsin River (HUC 070700031908) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 11Under a numeric limit
- 13With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 2 | 65 | 63 | June 30, 2026 | 13,246% over the limit |
| BOD, carbonaceous [5 day, 5 C] | 3 | 12 | 9 | August 31, 2007 | 80% over the limit |
| Solids, total suspended | 5 | 6 | 1 | May 31, 2000 | 1% over the limit |
| Mercury, total recoverable | 2 | 68 | 0 | ||
| Nitrogen, total [as N] | 0 | 34 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 34 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 34 | 0 | ||
| Coliform, fecal general | 1 | 22 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 2 | 0 | ||
| pH | 2 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Chlorine, total residual | 2 | 2 | 0 | ||
| Chloride [as Cl] | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 18, 2021 | WW SSO - Discharge to Waters | ST6 |
| January 7, 2021 | 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 WI0020427 there.
Nearby on the register
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- Every permit record in Portage, A to Z
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- Every permit record in Wisconsin, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.