Clean Water Act discharge permit · NPDES MOR04C067
DARDENNE PRAIRIE PHASE II MS4, Dardenne Prairie, MO: NPDES MOR04C067 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 1Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
DARDENNE PRAIRIE PHASE II MS4, held by City of Dardenne Prairie, holds NPDES permit MOR04C067, which discharges to Tributary To Lake St. Louis. EPA’s file records it issued October 25, 2021 and expiring September 30, 2026. 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 | DARDENNE PRAIRIE PHASE II MS4 |
|---|---|
| Permittee as filed | City of Dardenne Prairie |
| NPDES ID | MOR04C067 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Small municipal storm sewer systems |
| Issued | October 25, 2021 |
| Expiration date | September 30, 2026 |
| Address | Dardenne Prairie, MO 63368 |
| Receiving water | Tributary to Lake St. Louis |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Headwaters Peruque Creek (HUC 071100090101) |
| SIC | 9511 – Air, Water, & Solid Waste Management |
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 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOR04C067.
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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 14, 2023 | 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 MOR04C067 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.