Clean Water Act discharge permit · NPDES WI0023850
EAU CLAIRE WASTEWATER TREATMENT FACILITY, Eau Claire, WI: NPDES WI0023850 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 21Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
EAU CLAIRE WASTEWATER TREATMENT FACILITY, held by City of Eau Claire, holds NPDES permit WI0023850, which discharges to Chippewa R. EPA’s file records it issued April 13, 2011 and expiring March 31, 2016. 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 | EAU CLAIRE WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | City of Eau Claire |
| NPDES ID | WI0023850 |
| 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 | April 13, 2011 |
| Expiration date | March 31, 2016 |
| Address | Eau Claire, WI 54703 |
| Receiving water | CHIPPEWA R |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Taylor Creek-Chippewa River (HUC 070500050705) |
| Program components on file | Biosolids, POTW, Pretreatment |
| 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
- 24Pollutants on file
- 21Under a numeric limit
- 19With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 2 | 12 | 9 | May 31, 2022 | 716% over the limit |
| Solids, total suspended | 5 | 18 | 6 | January 31, 2015 | 29% over the limit |
| Coliform, fecal general | 1 | 55 | 3 | August 31, 2010 | 99,999% over the limit |
| pH | 2 | 1 | 1 | January 31, 2010 | |
| Phosphorus, total [as P] | 2 | 1 | 1 | January 31, 2012 | 19% over the limit |
| Nitrogen, total [as N] | 0 | 27 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 27 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 27 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 14 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 12 | 0 | ||
| Nickel, total recoverable | 2 | 8 | 0 | ||
| Silver total recoverable | 2 | 8 | 0 | ||
| Zinc, total recoverable | 2 | 8 | 0 | ||
| Lead, total recoverable | 2 | 8 | 0 | ||
| Cyanide, total [as CN] | 1 | 8 | 0 | ||
| Cadmium, total recoverable | 2 | 7 | 0 | ||
| Chromium, total recoverable | 2 | 7 | 0 | ||
| Mercury, total recoverable | 2 | 7 | 0 | ||
| Copper, total recoverable | 2 | 6 | 0 | ||
| BOD, carbonaceous [5 day, 5 C] | 3 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 0 | 0 | ||
| Cyanide, dissolved std method | 1 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 28, 2024 | WW SSO - Discharge to Waters | ST6 |
| May 27, 2024 | WW SSO - Discharge to Waters | ST6 |
| December 14, 2017 | 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.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.