Clean Water Act discharge permit · NPDES MO0095028
CARUTHERSVILLE WWTF, Caruthersville, MO: NPDES MO0095028 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
CARUTHERSVILLE WWTF, held by City of Caruthersville, holds NPDES permit MO0095028, which discharges to Tributary To Half Moon Bayou. EPA’s file records it issued November 24, 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 | CARUTHERSVILLE WWTF |
|---|---|
| Permittee as filed | City of Caruthersville |
| NPDES ID | MO0095028 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | November 24, 2021 |
| Expiration date | December 31, 2025 |
| Address | Caruthersville, MO 63830 |
| Receiving water | Tributary to Half Moon Bayou |
| Subwatershed | Half Moon Bayou (HUC 080202040701) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 30Pollutants on file
- 16Under a numeric limit
- 29With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 26 | 62 | 58 | December 31, 2025 | 1,405% over the limit |
| Solids, total suspended | 3 | 62 | 25 | April 30, 2025 | 1,289% over the limit |
| E. coli | 2 | 24 | 24 | July 31, 2025 | 99,999% over the limit |
| pH | 2 | 44 | 7 | January 31, 2026 | |
| BOD, 5-day, 20 deg. C | 3 | 44 | 6 | December 31, 2025 | 198% over the limit |
| BOD, 5-day, percent removal | 1 | 6 | 4 | August 31, 2025 | 480% over the limit |
| Cadmium, total recoverable | 2 | 63 | 3 | December 31, 2020 | 1,011% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 62 | 2 | April 30, 2008 | 211% over the limit |
| Copper, total recoverable | 2 | 62 | 2 | September 30, 2020 | 153% over the limit |
| Solids, suspended percent removal | 1 | 1 | 1 | February 28, 2026 | 567% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 152 | 0 | ||
| Lead, total recoverable | 4 | 64 | 0 | ||
| Zinc, total recoverable | 0 | 60 | 0 | ||
| Phosphorus, total [as P] | 4 | 18 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 12 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 12 | 0 | ||
| Nickel, total recoverable | 2 | 8 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 8 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 8 | 0 | ||
| Nitrogen, total [as N] | 0 | 6 | 0 | ||
| Cyanide, free [amenable to chlorination] | 0 | 6 | 0 | ||
| Silver total recoverable | 0 | 6 | 0 | ||
| Aluminum, total recoverable | 0 | 6 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 0 | 6 | 0 | ||
| Chromium, trivalent total recoverable | 0 | 6 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 0 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 1 | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 17, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| June 17, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 7, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| July 10, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| July 10, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| January 24, 2023 | Effluent Violations - Narrative Effluent Violation | ST6 |
| December 8, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| July 7, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| March 31, 2021 | Effluent Violations - Numeric effluent violation | 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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.