Clean Water Act discharge permit · NPDES WI0031658
BLUE MOUNDS WASTEWATER TREATMENT FACILITY, Blue Mounds, WI: NPDES WI0031658 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
BLUE MOUNDS WASTEWATER TREATMENT FACILITY, held by VILLAGE OF BLUE MOUNDS, holds NPDES permit WI0031658, which discharges to Williams Cr Via. EPA’s file records it issued December 30, 2013 and expiring December 31, 2018. 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 | BLUE MOUNDS WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | VILLAGE OF BLUE MOUNDS |
| NPDES ID | WI0031658 |
| 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 | December 30, 2013 |
| Expiration date | December 31, 2018 |
| Address | Blue Mounds, WI 53517 |
| Receiving water | WILLIAMS CR VIA |
| Subwatershed | Williams Creek-East Branch Pecatonica River (HUC 070900030602) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 8Under a numeric limit
- 9With a violation of any kind
- 8With 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 | 81 | 9 | April 30, 2022 | 99,999% over the limit |
| Solids, total suspended | 4 | 77 | 5 | April 30, 2022 | 63% over the limit |
| Chloride [as Cl] | 3 | 63 | 5 | November 30, 2025 | 11% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 42 | 4 | July 31, 1993 | 100% over the limit |
| Phosphorus, total [as P] | 1 | 5 | 4 | October 31, 2022 | 12% over the limit |
| Oxygen, dissolved [DO] | 1 | 21 | 3 | September 30, 2023 | 13% over the limit |
| Nitrogen, ammonia total [as N] | 0 | 4 | 2 | April 30, 1993 | 39% over the limit |
| pH | 2 | 37 | 1 | June 30, 2022 | |
| Temperature, water deg. fahrenheit | 1 | 17 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 1, 2023 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 WI0031658 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.