Clean Water Act discharge permit · NPDES MO0136093
PENDLETON WWTF, Warrenton, MO: NPDES MO0136093 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
PENDLETON WWTF, held by Montgomery County PWSD #1, holds NPDES permit MO0136093, which discharges to 8-20-13 Mudd V1.0. EPA’s file records it issued September 9, 2016 and expiring June 30, 2021. 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 | PENDLETON WWTF |
|---|---|
| Permittee as filed | Montgomery County PWSD #1 |
| NPDES ID | MO0136093 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 9, 2016 |
| Expiration date | June 30, 2021 |
| Issuing agency | MODNR-Water Protection Program |
| Address | Warrenton, MO 63383 |
| Receiving water | 8-20-13 MUDD V1.0 |
| Subwatershed | Lost Creek (HUC 103002000303) |
| 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
- 9Pollutants on file
- 9Under a numeric limit
- 9With a violation of any kind
- 2With 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 | 4 | 20 | 10 | September 30, 2023 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 15 | 3 | September 30, 2021 | 465% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 18 | 0 | ||
| Solids, total suspended | 3 | 18 | 0 | ||
| pH | 2 | 12 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 12 | 0 | ||
| Oxygen, dissolved [DO] | 4 | 10 | 0 | ||
| Chlorine, total residual | 4 | 10 | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 29, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| October 6, 2021 | Reporting Violations - Failure to Submit DMRs | ST6 |
| October 6, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| July 15, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| August 14, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| August 14, 2019 | Permit Violations - Violation Specified in Comment | 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 MO0136093 there.
Nearby on the register
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.