Clean Water Act discharge permit · NPDES WI0023990
FOND DU LAC WATER POLLUTION CONTROL PLANT, Fond Du Lac County, WI: NPDES WI0023990 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 14Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
FOND DU LAC WATER POLLUTION CONTROL PLANT, held by City of Fond du Lac, holds NPDES permit WI0023990, which discharges to L Winnebago. EPA’s file records it issued December 21, 2012 and expiring December 31, 2017. 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 | FOND DU LAC WATER POLLUTION CONTROL PLANT |
|---|---|
| Permittee as filed | City of Fond du Lac |
| NPDES ID | WI0023990 |
| 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 | December 21, 2012 |
| Expiration date | December 31, 2017 |
| Address | Fond Du Lac County, WI 54936 |
| Receiving water | L WINNEBAGO |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Eldorado Marsh-Fond Du Lac River (HUC 040302030204) |
| 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
- 15Pollutants on file
- 14Under a numeric limit
- 7With a violation of any kind
- 6With 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 | 0 | 10 | 10 | August 31, 2007 | 3,347% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 9 | 9 | March 31, 2004 | 117% over the limit |
| Solids, total suspended | 5 | 8 | 8 | October 31, 2012 | 141% over the limit |
| Phosphorus, total [as P] | 2 | 8 | 8 | October 31, 2014 | 122% over the limit |
| Coliform, fecal general | 1 | 39 | 4 | September 30, 2001 | 131% over the limit |
| pH | 2 | 3 | 3 | December 31, 2002 | |
| Mercury, total recoverable | 2 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 12 | 0 | 0 | ||
| Nickel, total recoverable | 2 | 0 | 0 | ||
| Zinc, total recoverable | 2 | 0 | 0 | ||
| Cadmium, total recoverable | 2 | 0 | 0 | ||
| Lead, total recoverable | 2 | 0 | 0 | ||
| Chromium, total recoverable | 2 | 0 | 0 | ||
| Copper, total recoverable | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 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 |
|---|---|---|
| July 2, 2024 | WW SSO - Discharge to Waters | ST6 |
| May 22, 2024 | 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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WI0023990.
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- One watershed — $2,990/year
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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 WI0023990 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.