Clean Water Act discharge permit · NPDES MO0086126
MSD FENTON WWTP, Fenton, MO: NPDES MO0086126 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
MSD FENTON WWTP, held by Metropolitan Saint Louis Sewer District, holds NPDES permit MO0086126, which discharges to Meramec R.. EPA’s file records it issued January 1, 2018 and expiring December 31, 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 | MSD FENTON WWTP |
|---|---|
| Permittee as filed | Metropolitan Saint Louis Sewer District |
| NPDES ID | MO0086126 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 1, 2018 |
| Expiration date | December 31, 2022 |
| Issuing agency | MODNR-Water Protection Program |
| Address | Fenton, MO 63026 |
| Receiving water | Meramec R. |
| Receiving water impaired | 303(D) Listed |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MOR000560409; ICIS-AIR source MO0000002918901208 |
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
- 25Pollutants on file
- 17Under a numeric limit
- 15With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 10 | 4 | October 31, 2006 | 1,624% over the limit |
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 2 | 1 | July 31, 2014 | |
| CBOD5+NH3-N | 0 | 164 | 0 | ||
| Cadmium, total recoverable | 2 | 34 | 0 | ||
| Lead, total recoverable | 0 | 34 | 0 | ||
| Copper, total recoverable | 0 | 34 | 0 | ||
| Ammonia [as N] + unionized ammonia | 0 | 24 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 6 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 2 | 6 | 0 | ||
| Organics, total toxic [TTO] | 0 | 6 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Coliform, fecal general | 0 | 2 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 1 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| Zinc, total recoverable | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 0 | 0 | ||
| BOD, carbonaceous, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0086126.
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 MO0086126 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.