Clean Water Act discharge permit · NPDES MO0022063
HAMILTON SW MUNICIPAL WWTF, Hamilton, MO: NPDES MO0022063 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
HAMILTON SW MUNICIPAL WWTF, held by City of Hamilton, holds NPDES permit MO0022063, which discharges to Tributary To Tom Creek. EPA’s file records it issued October 31, 2019 and expiring June 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | HAMILTON SW MUNICIPAL WWTF |
|---|---|
| Permittee as filed | City of Hamilton |
| NPDES ID | MO0022063 |
| 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 31, 2019 |
| Expiration date | June 30, 2022 |
| Address | Hamilton, MO 64644 |
| Receiving water | Tributary to Tom Creek |
| Subwatershed | Tom Creek (HUC 102801011501) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 8With a violation of any kind
- 5With 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, suspended percent removal | 1 | 15 | 14 | June 30, 2026 | 186% over the limit |
| pH | 2 | 38 | 13 | December 31, 2024 | |
| Solids, total suspended | 3 | 19 | 12 | June 30, 2026 | 86% over the limit |
| BOD, 5-day, percent removal | 1 | 13 | 12 | June 30, 2026 | 168% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 11 | 4 | June 30, 2026 | 80% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 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 |
|---|---|---|
| March 31, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 31, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| March 28, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| June 28, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| January 10, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| June 30, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| March 31, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| December 30, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 30, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| March 31, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| August 6, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| August 6, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 6, 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.