Clean Water Act discharge permit · NPDES WI0023221
APPLETON CITY WWTF, Appleton, WI: NPDES WI0023221 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
APPLETON CITY WWTF, held by APPLETON WASTEWATER TREATMENT, holds NPDES permit WI0023221, which discharges to Fox R. EPA’s file records it issued September 13, 2010 and expiring September 30, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | APPLETON CITY WWTF |
|---|---|
| Permittee as filed | APPLETON WASTEWATER TREATMENT |
| NPDES ID | WI0023221 |
| 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 | September 13, 2010 |
| Expiration date | September 30, 2015 |
| Address | Appleton, WI 54915 |
| Receiving water | FOX R |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Garners Creek-Fox River (HUC 040302040205) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 15Under a numeric limit
- 16With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 5 | 52 | 10 | June 30, 2026 | 986% over the limit |
| Nitrogen, ammonia total [as N] | 15 | 21 | 6 | February 28, 2021 | 101% over the limit |
| Mercury, total recoverable | 2 | 14 | 2 | September 30, 2018 | 6% over the limit |
| Chlorine, total residual | 2 | 4 | 1 | May 31, 2020 | 182% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 38 | 0 | ||
| Coliform, fecal general | 1 | 37 | 0 | ||
| BOD, carbonaceous [5 day, 5 C] | 5 | 36 | 0 | ||
| Phosphorus, total [as P] | 2 | 24 | 0 | ||
| Zinc, total recoverable | 2 | 13 | 0 | ||
| pH | 2 | 12 | 0 | ||
| Nickel, total recoverable | 2 | 12 | 0 | ||
| Cadmium, total recoverable | 2 | 12 | 0 | ||
| Lead, total recoverable | 2 | 12 | 0 | ||
| Chromium, total recoverable | 2 | 12 | 0 | ||
| Copper, total recoverable | 2 | 12 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 12 | 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 |
|---|---|---|
| June 22, 2025 | WW SSO - Discharge to Waters | ST6 |
| July 13, 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.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.