Clean Water Act discharge permit · NPDES MOR100086
CITY OF CLAYTON, Clayton, MO: NPDES MOR100086 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 1Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
CITY OF CLAYTON, held by City of Clayton, holds NPDES permit MOR100086, which discharges to Tributary To Black Cr.. EPA’s file records it issued October 1, 2017 and expiring June 22, 2022. 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 | CITY OF CLAYTON |
|---|---|
| Permittee as filed | City of Clayton |
| NPDES ID | MOR100086 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | October 1, 2017 |
| Expiration date | June 22, 2022 |
| Address | Clayton, MO 63105 |
| Receiving water | Tributary to Black Cr. |
| Subwatershed | Deer Creek (HUC 071401010504) |
| NAICS | 238910 – Site Preparation Contractors |
| SIC | 1629 – Heavy Construction |
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
- 1Pollutants on file
- 1Under a numeric limit
- 1With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Report due [yrmoda] | 1 | 24 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOR100086.
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 5, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 31, 2025 | Reporting Violations - Failure to Submit DMRs | ST6 |
| July 3, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| November 20, 2023 | Reporting Violations - Failure to Submit DMRs | ST6 |
| January 13, 2022 | Reporting Violations - Failure to Submit DMRs | ST6 |
| October 15, 2021 | Reporting Violations - Failure to Submit DMRs | 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 MOR100086 there.
Nearby on the register
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- Every permit record in Clayton, 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.