Clean Water Act discharge permit · NPDES WI0071501
SOKAOGON CHIPPEWA WASTEWATER TREATMENT SYSTEM, Crandon, WI: NPDES WI0071501 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
SOKAOGON CHIPPEWA WASTEWATER TREATMENT SYSTEM, held by Sokaogon Chippewa Wastewater Treatment System, holds NPDES permit WI0071501, which discharges to Wetand 22 On The Resevation. EPA’s file records it issued July 31, 2017 and expiring July 23, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SOKAOGON CHIPPEWA WASTEWATER TREATMENT SYSTEM |
|---|---|
| Permittee as filed | Sokaogon Chippewa Wastewater Treatment System |
| NPDES ID | WI0071501 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 31, 2017 |
| Expiration date | July 23, 2022 |
| Address | Crandon, WI 54520 |
| Receiving water | Wetand 22 on the Resevation |
| Subwatershed | Squaw Creek-Swamp Creek (HUC 040302020105) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 10Under a numeric limit
- 10With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 10 | 190 | 54 | March 31, 2021 | 326% over the limit |
| Solids, total suspended | 10 | 361 | 4 | August 31, 2013 | 286% over the limit |
| E. coli | 4 | 44 | 3 | May 31, 2022 | 485% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 10 | 358 | 1 | July 31, 2012 | 138% over the limit |
| pH | 8 | 277 | 1 | July 31, 2025 | |
| Flow, in conduit or thru treatment plant | 6 | 223 | 0 | ||
| Phosphorus, total [as P] | 6 | 129 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 69 | 0 | ||
| Temperature, water deg. fahrenheit | 4 | 44 | 0 | ||
| Outfall observation,visual, y/n response | 2 | 22 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WI0071501.
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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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 WI0071501 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.