Clean Water Act discharge permit · NPDES MO0116246
MARQUAND WWTP, Marquand, MO: NPDES MO0116246 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
MARQUAND WWTP, held by City of Marquand, holds NPDES permit MO0116246, which discharges to Tributary To Castor R.. EPA’s file records it issued February 22, 2017 and expiring February 28, 2022. 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 | MARQUAND WWTP |
|---|---|
| Permittee as filed | City of Marquand |
| NPDES ID | MO0116246 |
| 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 | February 22, 2017 |
| Expiration date | February 28, 2022 |
| Address | Marquand, MO 63655 |
| Receiving water | Tributary to Castor R. |
| Subwatershed | Wash Creek-Castor River (HUC 071401070204) |
| 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
- 11Pollutants on file
- 8Under a numeric limit
- 11With a violation of any kind
- 7With 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] | 4 | 174 | 168 | June 30, 2026 | 1,550% over the limit |
| E. coli | 2 | 52 | 46 | May 31, 2026 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 55 | 45 | July 31, 2025 | 177% over the limit |
| BOD, 5-day, percent removal | 0 | 23 | 23 | July 31, 2026 | 567% over the limit |
| pH | 2 | 27 | 19 | June 30, 2026 | |
| Solids, suspended percent removal | 0 | 18 | 18 | July 31, 2026 | 567% over the limit |
| Solids, total suspended | 3 | 15 | 5 | August 31, 2017 | 130% over the limit |
| Chlorine, total residual | 2 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 4 | 0 | ||
| Coliform, fecal general | 0 | 4 | 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
- 17Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 16, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| September 17, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| July 6, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| July 6, 2023 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 6, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| June 16, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| March 21, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| June 17, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| March 19, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| June 30, 2020 | Reporting Violations - Failure to Submit DMRs | ST6 |
| June 30, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| April 2, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| December 27, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| December 27, 2019 | Reporting Violations - Failure to Submit DMRs | ST6 |
| June 27, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| May 3, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| July 5, 2018 | Effluent Violations - Numeric effluent violation | 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 MO0116246 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.