Clean Water Act discharge permit · NPDES MO0108863
GASCONADE WWTP, Gasconade, MO: NPDES MO0108863 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
GASCONADE WWTP, held by City of Gasconade, holds NPDES permit MO0108863, which discharges to Gasconade R.. EPA’s file records it issued July 26, 2017 and expiring June 30, 2019. 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 | GASCONADE WWTP |
|---|---|
| Permittee as filed | City of Gasconade |
| NPDES ID | MO0108863 |
| 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 26, 2017 |
| Expiration date | June 30, 2019 |
| Address | Gasconade, MO 65061 |
| Receiving water | Gasconade R. |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Richland Creek-Gasconade River (HUC 102902030311) |
| 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
- 13Pollutants on file
- 11Under a numeric limit
- 13With 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] | 6 | 21 | 11 | September 30, 2023 | 692% over the limit |
| Solids, suspended percent removal | 1 | 14 | 9 | December 31, 2018 | 421% over the limit |
| Solids, total suspended | 2 | 22 | 3 | January 31, 2018 | 28% over the limit |
| Coliform, fecal general | 0 | 11 | 3 | June 30, 2008 | 825% over the limit |
| BOD, 5-day, percent removal | 1 | 6 | 1 | August 31, 2017 | 127% over the limit |
| pH | 2 | 18 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 17 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 16 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 10 | 0 | ||
| Chlorine, total residual | 0 | 10 | 0 | ||
| E. coli | 2 | 4 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 1 | 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
- 14Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 16, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 16, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| October 6, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| October 6, 2021 | Reporting Violations - Failure to Submit DMRs | ST6 |
| July 15, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| March 30, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| September 28, 2018 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 28, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| September 11, 2018 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 11, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| September 11, 2018 | Effluent Violations - Narrative Effluent Violation | ST6 |
| September 11, 2018 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 29, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| June 29, 2018 | Reporting Violations - Improper/ Incorrect Reporting | 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 MO0108863 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.