Clean Water Act discharge permit · NPDES MO0025275
PORTAGEVILLE WWTP, Portageville, MO: NPDES MO0025275 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 25Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
PORTAGEVILLE WWTP, held by City of Portageville, holds NPDES permit MO0025275, which discharges to Portage Open Bay. EPA’s file records it issued February 9, 2021 and expiring December 31, 2025. 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 | PORTAGEVILLE WWTP |
|---|---|
| Permittee as filed | City of Portageville |
| NPDES ID | MO0025275 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 9, 2021 |
| Expiration date | December 31, 2025 |
| Address | Portageville, MO 63873 |
| Receiving water | Portage Open Bay |
| Subwatershed | Portage Open Bay (HUC 080202040608) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 26Pollutants on file
- 25Under a numeric limit
- 14With a violation of any kind
- 10With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 3 | 50 | 46 | July 31, 2026 | 352% over the limit |
| Nitrogen, ammonia total [as N] | 18 | 37 | 37 | July 31, 2026 | 1,492% over the limit |
| E. coli | 2 | 34 | 28 | July 31, 2026 | 99,999% over the limit |
| Solids, total suspended | 3 | 21 | 16 | March 31, 2025 | 300% over the limit |
| Copper, total recoverable | 2 | 6 | 6 | September 30, 2024 | 176% over the limit |
| Solids, suspended percent removal | 1 | 6 | 6 | March 31, 2025 | 173% over the limit |
| BOD, 5-day, percent removal | 1 | 4 | 4 | June 30, 2025 | 207% over the limit |
| pH | 2 | 5 | 3 | July 31, 2026 | |
| Cyanide, free [amenable to chlorination] | 2 | 3 | 3 | December 31, 2020 | 22% over the limit |
| Nickel, total recoverable | 2 | 1 | 1 | September 30, 2024 | 23% over the limit |
| Oxygen, dissolved [DO] | 0 | 6 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 0 | 0 | ||
| Iron, total recoverable | 2 | 0 | 0 | ||
| Silver total recoverable | 2 | 0 | 0 | ||
| Zinc, total recoverable | 2 | 0 | 0 | ||
| Cadmium, total recoverable | 2 | 0 | 0 | ||
| Lead, total recoverable | 2 | 0 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 2 | 0 | 0 | ||
| Chromium, trivalent total recoverable | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 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
- 13Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 16, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| December 10, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| October 2, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| March 31, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| December 30, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| June 28, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| May 7, 2024 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| May 7, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 7, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| March 29, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| January 26, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| October 9, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| November 13, 2019 | 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 MO0025275 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.