Clean Water Act discharge permit · NPDES MO0004812
AMEREN MISSOURI - LABADIE ENERGY CENTER, Labadie, MO: NPDES MO0004812 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 22Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
AMEREN MISSOURI - LABADIE ENERGY CENTER, held by Union Electric Company d/b/a Ameren MO, holds NPDES permit MO0004812, which discharges to Missouri R.. EPA’s file records it issued December 1, 2021 and expiring November 30, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | AMEREN MISSOURI - LABADIE ENERGY CENTER |
|---|---|
| Permittee as filed | Union Electric Company d/b/a Ameren MO |
| NPDES ID | MO0004812 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | December 1, 2021 |
| Expiration date | November 30, 2026 |
| Address | Labadie, MO 63055 |
| Receiving water | Missouri R. |
| Subwatershed | Labadie Creek-Missouri River (HUC 103002000603) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 25Pollutants on file
- 22Under a numeric limit
- 10With a violation of any kind
- 7With 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, settleable | 0 | 106 | 84 | November 30, 2001 | 80,800% over the limit |
| Solids, total suspended | 12 | 41 | 37 | June 30, 2019 | 1,313% over the limit |
| pH | 12 | 34 | 4 | May 31, 2020 | |
| Oil and grease [soxhlet extr.] tot. | 6 | 26 | 4 | August 31, 2001 | 60% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 6 | 4 | August 31, 2014 | 207% over the limit |
| Thermal Discharge | 0 | 11 | 2 | November 30, 2007 | 116% over the limit |
| E. coli, colony forming units [CFU] | 0 | 2 | 2 | September 30, 2020 | 3,442% over the limit |
| Sulfate, total [as SO4] | 2 | 8 | 0 | ||
| Mixing Zone | 4 | 2 | 0 | ||
| Month excursion time [min] | 3 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 18 | 0 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 6 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 4 | 0 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| Boron, total recoverable | 2 | 0 | 0 | ||
| Chloride | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [TKN] [water] | 2 | 0 | 0 | ||
| Freeboard | 2 | 0 | 0 | ||
| Chlorides + Sulfates | 2 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 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 MO0004812.
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 MO0004812 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 September 15, 2026.