Clean Water Act discharge permit · NPDES MO0101125
OTTERVILLE WWTF, Otterville, MO: NPDES MO0101125 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
OTTERVILLE WWTF, held by City of Otterville, holds NPDES permit MO0101125, which discharges to Long Branch. EPA’s file records it issued September 29, 2017 and expiring March 31, 2021. 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 | OTTERVILLE WWTF |
|---|---|
| Permittee as filed | City of Otterville |
| NPDES ID | MO0101125 |
| 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 | September 29, 2017 |
| Expiration date | March 31, 2021 |
| Address | Otterville, MO 65348 |
| Receiving water | Long Branch |
| Subwatershed | Long Branch-Lamine River (HUC 103001030502) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 13Under a numeric limit
- 13With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 6 | 176 | 66 | May 31, 2026 | 593% over the limit |
| Solids, total suspended | 4 | 121 | 29 | May 31, 2026 | 187% over the limit |
| E. coli, colony forming units [CFU] | 2 | 54 | 28 | May 31, 2024 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 116 | 26 | November 30, 2024 | 160% over the limit |
| pH | 2 | 81 | 18 | May 31, 2026 | |
| BOD, 5-day, percent removal | 1 | 37 | 12 | June 30, 2025 | 287% over the limit |
| Solids, suspended percent removal | 1 | 37 | 12 | June 30, 2025 | 567% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 53 | 7 | April 30, 2016 | 426% over the limit |
| Temperature, water deg. fahrenheit | 2 | 48 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 48 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 46 | 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
- 15Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 19, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| September 19, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 21, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| December 30, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| September 30, 2021 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| June 30, 2021 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 27, 2020 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| August 27, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 27, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| August 27, 2020 | Reporting Violations - Failure to Submit DMRs | ST6 |
| August 27, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 27, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| June 30, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| June 30, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 28, 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 MO0101125 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.