Clean Water Act discharge permit · NPDES MO0084158
MONTGOMERY CITY EAST WWTP, Montgomery City, MO: NPDES MO0084158 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 12Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
MONTGOMERY CITY EAST WWTP, held by City of Montgomery, holds NPDES permit MO0084158, which discharges to Elkhorn Cr.. EPA’s file records it issued March 6, 2019 and expiring September 30, 2023. 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 | MONTGOMERY CITY EAST WWTP |
|---|---|
| Permittee as filed | City of Montgomery |
| NPDES ID | MO0084158 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 6, 2019 |
| Expiration date | September 30, 2023 |
| Address | Montgomery City, MO 63361 |
| Receiving water | Elkhorn Cr. |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Upper Elkhorn Creek (HUC 071100080301) |
| 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
- 17Pollutants on file
- 12Under a numeric limit
- 10With 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] | 4 | 84 | 6 | May 31, 2007 | 21% over the limit |
| Coliform, fecal general | 0 | 5 | 3 | June 30, 2009 | 4,650% over the limit |
| Solids, total suspended | 2 | 110 | 2 | July 31, 2008 | 222% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 54 | 2 | June 30, 2008 | 47% over the limit |
| pH | 2 | 70 | 1 | June 30, 2011 | |
| BOD, 5-day, 20 deg. C | 2 | 112 | 0 | ||
| E. coli, colony forming units [CFU] | 0 | 24 | 0 | ||
| Ammonia [as N] + unionized ammonia | 0 | 19 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 1 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 1 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 0 | 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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 30, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 16, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 16, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| October 9, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| October 9, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | 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.
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Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.