Clean Water Act discharge permit · NPDES MO0089273
ESSEX WWTF, Essex, MO: NPDES MO0089273 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
ESSEX WWTF, held by City of Essex, holds NPDES permit MO0089273, which discharges to Ditch #6. EPA’s file records it issued November 27, 2017 and expiring September 30, 2020. 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 | ESSEX WWTF |
|---|---|
| Permittee as filed | City of Essex |
| NPDES ID | MO0089273 |
| 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 | November 27, 2017 |
| Expiration date | September 30, 2020 |
| Address | Essex, MO 63846 |
| Receiving water | Ditch #6 |
| Subwatershed | Ditch No 9 (HUC 080202040302) |
| 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
- 14Pollutants on file
- 11Under a numeric limit
- 12With a violation of any kind
- 10With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 43 | 32 | June 30, 2026 | 143% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 29 | 18 | August 31, 2013 | 1,127% over the limit |
| pH | 2 | 39 | 16 | December 31, 2024 | |
| Solids, suspended percent removal | 1 | 13 | 9 | June 30, 2026 | 547% over the limit |
| E. coli, colony forming units [CFU] | 0 | 14 | 6 | April 30, 2014 | 512% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 6 | 6 | June 30, 2017 | 507% over the limit |
| E. coli | 2 | 5 | 3 | September 30, 2020 | 1,075% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 12 | 2 | December 31, 2009 | 185% over the limit |
| BOD, 20-day, percent removal | 1 | 3 | 1 | November 30, 2019 | 567% over the limit |
| BOD, 5-day, percent removal | 0 | 3 | 1 | March 31, 2022 | 527% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 9, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| July 9, 2025 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 31, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| December 30, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| August 12, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| September 24, 2019 | 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.
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Nearby on the register
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- Every permit record in Essex, A to Z
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.