Clean Water Act discharge permit · NPDES WI0021300
CORNELL WASTEWATER TREATMENT FACILITY, Cornell, WI: NPDES WI0021300 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
CORNELL WASTEWATER TREATMENT FACILITY, held by City of Cornell, holds NPDES permit WI0021300, which discharges to Chippewa R. EPA’s file records it issued September 18, 2013 and expiring September 30, 2018. 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 | CORNELL WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | City of Cornell |
| NPDES ID | WI0021300 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 18, 2013 |
| Expiration date | September 30, 2018 |
| Address | Cornell, WI 54732 |
| Receiving water | CHIPPEWA R |
| Subwatershed | French Creek-Chippewa River (HUC 070500050104) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 9Pollutants on file
- 7Under a numeric limit
- 8With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| Copper, total recoverable | 2 | 112 | 48 | April 30, 2026 | 235% over the limit |
| Solids, total suspended | 4 | 89 | 13 | September 30, 2021 | 112% over the limit |
| BOD, carbonaceous [5 day, 5 C] | 2 | 77 | 13 | March 31, 2025 | 111% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 44 | 6 | August 31, 1991 | 13% over the limit |
| Nitrogen, ammonia total [as N] | 0 | 11 | 3 | March 31, 2025 | 9% over the limit |
| Coliform, fecal general | 0 | 51 | 1 | September 30, 2023 | 12% over the limit |
| pH | 2 | 39 | 1 | August 31, 2018 | |
| Flow, in conduit or thru treatment plant | 2 | 38 | 0 | ||
| Phosphorus, total [as P] | 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 |
|---|---|---|
| April 14, 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.
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 WI0021300 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.