Clean Water Act discharge permit · NPDES MO0095745
KNOX CITY WWTF, Knox City, MO: NPDES MO0095745 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 2Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
KNOX CITY WWTF, held by Knox City, holds NPDES permit MO0095745, which discharges to Little Troublesome Creek. EPA’s file records it issued October 17, 2018 and expiring March 31, 2023. 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 | KNOX CITY WWTF |
|---|---|
| Permittee as filed | Knox City |
| NPDES ID | MO0095745 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | October 17, 2018 |
| Expiration date | March 31, 2023 |
| Address | Knox City, MO 63446 |
| Receiving water | Little Troublesome Creek |
| Subwatershed | Hawkins Branch (HUC 071100030201) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 12Pollutants on file
- 2Under a numeric limit
- 12With a violation of any kind
- 1With 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] | 0 | 16 | 4 | May 31, 2018 | 100% over the limit |
| Rainfall | 2 | 40 | 0 | ||
| Freeboard | 1 | 20 | 0 | ||
| Solids, total suspended | 0 | 17 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 15 | 0 | ||
| pH | 0 | 12 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 0 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 12 | 0 | ||
| E. coli | 0 | 8 | 0 | ||
| Temperature, water deg. centigrade | 0 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 1 | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 2, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 2, 2025 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| November 14, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 9, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| January 9, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 9, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| January 9, 2020 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| July 9, 2019 | Reporting Violations - Failure to Submit DMRs | 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 MO0095745 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.