Clean Water Act discharge permit · NPDES MO0087181
MAWC ROGUE CREEK WWTF, Potosi, MO: NPDES MO0087181 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
MAWC ROGUE CREEK WWTF, held by Missouri-American Water Company, holds NPDES permit MO0087181, which discharges to Rogue Creek. EPA’s file records it issued March 20, 2018 and expiring September 30, 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 | MAWC ROGUE CREEK WWTF |
|---|---|
| Permittee as filed | Missouri-American Water Company |
| NPDES ID | MO0087181 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 20, 2018 |
| Expiration date | September 30, 2022 |
| Address | Potosi, MO 63664 |
| Receiving water | Rogue Creek |
| Subwatershed | Clear Creek-Mineral Fork (HUC 071401040204) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 7Under a numeric limit
- 8With 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 |
|---|---|---|---|---|---|
| E. coli | 2 | 7 | 7 | December 31, 2020 | 99,999% over the limit |
| E. coli, colony forming units [CFU] | 0 | 6 | 6 | June 30, 2017 | 15,138% over the limit |
| Chlorine, total residual | 2 | 8 | 4 | September 30, 2012 | 1,900% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 4 | 4 | March 31, 2021 | 487% over the limit |
| Solids, total suspended | 2 | 4 | 2 | March 31, 2019 | 70% over the limit |
| pH | 2 | 7 | 1 | June 30, 2012 | |
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 2 | 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 |
|---|---|---|
| November 13, 2023 | Reporting Violations - Failure to Submit DMRs | ST6 |
| March 18, 2019 | Permit Violations - Violation Specified in Comment | 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.
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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 MO0087181 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.