Clean Water Act discharge permit · NPDES MOR203254
O'FALLON CASTING, O'Fallon, MO: NPDES MOR203254 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
O'FALLON CASTING, held by OFALLON CASTING LLC, holds NPDES permit MOR203254, which discharges to Tributary To Dardenne Cr.. EPA’s file records it issued September 20, 2019 and expiring August 31, 2024. 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.
What the register holds for O'FALLON CASTING: its NPDES ID, its permit type and status, its dates, its address in O'Fallon, Missouri, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MOR203254.
Identity
| Facility as filed | O'FALLON CASTING |
|---|---|
| Permittee as filed | OFALLON CASTING LLC |
| NPDES ID | MOR203254 |
| 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 | Industrial stormwater |
| Issued | September 20, 2019 |
| Expiration date | August 31, 2024 |
| Address | O'Fallon, MO 63366 |
| Receiving water | Tributary to Dardenne Cr. |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lower Dardenne Creek (HUC 071100090105) |
| NAICS | 331524 – Aluminum Foundries [Except Die-Casting] |
| SIC | 3365 – Aluminum Foundries |
| Other EPA IDs (FRS) | RCRA handler MOD045070661; ICIS-AIR source MO0000002918300077 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MOR203254.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MOR203254.
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 MOR203254 there.
Nearby on the register
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- Discharge permits in Missouri
- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.