Clean Water Act discharge permit · NPDES WI0003671
EXPERA SPECIALTY SOLUTIONS, LLC-MOSINEE, Mosinee, WI: NPDES WI0003671 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 9Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
EXPERA SPECIALTY SOLUTIONS, LLC-MOSINEE, held by Expera Specialty Solutions LLC Mosinee, holds NPDES permit WI0003671, which discharges to Wisconsin R. EPA’s file records it issued September 7, 2005 and expiring September 30, 2010. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | EXPERA SPECIALTY SOLUTIONS, LLC-MOSINEE |
|---|---|
| Permittee as filed | Expera Specialty Solutions LLC Mosinee |
| NPDES ID | WI0003671 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 7, 2005 |
| Expiration date | September 30, 2010 |
| Address | Mosinee, WI 54455 |
| Receiving water | WISCONSIN R |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lake Dubay-Wisconsin River (HUC 070700021807) |
| SIC | 2611 – Pulp Mills |
| Other EPA IDs (FRS) | RCRA handler WID068480904; ICIS-AIR source WI0000005507300005 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 12Pollutants on file
- 9Under a numeric limit
- 12With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 2 | 54 | 4 | July 31, 2022 | 36% over the limit |
| Copper, total recoverable | 0 | 199 | 3 | April 30, 2023 | 295% over the limit |
| pH range excursions, > 60 minutes | 1 | 71 | 3 | July 31, 2014 | 2,147,483,650% over the limit |
| pH range excursions, monthly total accum | 1 | 71 | 3 | July 31, 2014 | 61% over the limit |
| Phosphorus, total [as P] | 3 | 5 | 3 | December 31, 2025 | 595% over the limit |
| Solids, total suspended | 4 | 100 | 2 | November 30, 2018 | 35% over the limit |
| Temperature, water deg. fahrenheit | 10 | 69 | 2 | July 31, 2018 | 12% over the limit |
| pH | 2 | 3 | 1 | February 28, 2026 | |
| Flow, in conduit or thru treatment plant | 10 | 215 | 0 | ||
| Chlorine, total residual | 9 | 133 | 0 | ||
| Cadmium, total recoverable | 0 | 51 | 0 | ||
| Mercury, total recoverable | 0 | 4 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 17, 2025 | Monitoring Violations - Analysis not Conducted | ST6 |
| January 21, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| March 26, 2020 | Monitoring Violations - Analysis not Conducted | 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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Nearby on the register
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- Every permit record in Wisconsin, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.