Clean Water Act discharge permit · NPDES MO0101362
MSD GRAND GLAIZE WWTP, Valley Park, MO: NPDES MO0101362 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 18Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
MSD GRAND GLAIZE WWTP, held by Metropolitan St Louis Sewer District, holds NPDES permit MO0101362, 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 (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MSD GRAND GLAIZE WWTP |
|---|---|
| Permittee as filed | Metropolitan St Louis Sewer District |
| NPDES ID | MO0101362 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| 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 |
| Address | Valley Park, MO 63088 |
| Receiving water | Meramec R. |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Grand Glaize Creek-Meramec River (HUC 071401021002) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 26Pollutants on file
- 18Under 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 2 | 42 | 26 | December 31, 2016 | 157% over the limit |
| Coliform, fecal general | 0 | 15 | 1 | July 31, 2011 | 120% over the limit |
| CBOD5+NH3-N | 0 | 118 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 88 | 0 | ||
| Temperature, water deg. centigrade | 0 | 84 | 0 | ||
| Ammonia [as N] + unionized ammonia | 0 | 80 | 0 | ||
| pH | 2 | 50 | 0 | ||
| Solids, total suspended | 2 | 25 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 24 | 0 | ||
| Solids, settleable | 0 | 20 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 19 | 0 | ||
| Cadmium, total recoverable | 0 | 14 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 0 | 14 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 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 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 2 | 0 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 27, 2024 | 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.
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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 MO0101362 there.
Nearby on the register
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- Every permit record in Valley Park, A to Z
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.