Clean Water Act discharge permit · NPDES WI0020273
MARATHON WATER & SEWER DPT WW TREATMNT PLANT, Marathon City, WI: NPDES WI0020273 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MARATHON WATER & SEWER DPT WW TREATMNT PLANT, held by Marathon Water & Sewer Dept, holds NPDES permit WI0020273, which discharges to Rib R. EPA’s file records it issued January 31, 2012 and expiring December 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 | MARATHON WATER & SEWER DPT WW TREATMNT PLANT |
|---|---|
| Permittee as filed | Marathon Water & Sewer Dept |
| NPDES ID | WI0020273 |
| 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 | January 31, 2012 |
| Expiration date | December 31, 2016 |
| Address | Marathon City, WI 54448 |
| Receiving water | RIB R |
| Subwatershed | Kennedy Creek-Big Rib River (HUC 070700021003) |
| 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
- 8Pollutants on file
- 7Under a numeric limit
- 6With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 4 | 21 | 9 | February 28, 1991 | 107% over the limit |
| Solids, total suspended | 4 | 27 | 3 | November 30, 2019 | 457% over the limit |
| pH | 2 | 15 | 3 | June 30, 2020 | |
| BOD, carbonaceous [5 day, 5 C] | 2 | 13 | 1 | July 31, 2018 | 74% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 12 | 0 | ||
| Coliform, fecal general | 0 | 1 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 1, 2023 | WW SSO - Discharge to Waters | ST6 |
| February 5, 2020 | Monitoring Violations - Analysis not Conducted | ST6 |
| January 28, 2020 | Monitoring Violations - Analysis not Conducted | ST6 |
| April 18, 2019 | WW SSO - Discharge to Waters | ST6 |
| December 8, 2018 | WW SSO - Discharge to Waters | ST6 |
| October 11, 2018 | 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
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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 WI0020273 there.
Nearby on the register
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- Every permit record in Marathon City, A to Z
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- Every permit record in Wisconsin, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.