Clean Water Act discharge permit · NPDES MO0055123
HORNERSVILLE WWTF, Hornersville, MO: NPDES MO0055123 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
HORNERSVILLE WWTF, held by City of Hornersville, holds NPDES permit MO0055123, which discharges to Tributary To Ditch #81. EPA’s file records it issued December 20, 2016 and expiring March 31, 2021. 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 | HORNERSVILLE WWTF |
|---|---|
| Permittee as filed | City of Hornersville |
| NPDES ID | MO0055123 |
| 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 | December 20, 2016 |
| Expiration date | March 31, 2021 |
| Address | Hornersville, MO 63855 |
| Receiving water | Tributary to Ditch #81 |
| Subwatershed | Ditch Number 27 (HUC 080202040506) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 8Under a numeric limit
- 13With a violation of any kind
- 4With 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 | 0 | 19 | 17 | February 29, 2012 | 178% over the limit |
| E. coli, colony forming units [CFU] | 0 | 6 | 6 | September 30, 2014 | 99,999% over the limit |
| pH | 0 | 30 | 3 | September 30, 2006 | |
| Solids, total suspended | 0 | 5 | 3 | October 31, 2008 | 34% over the limit |
| Rainfall | 1 | 18 | 0 | ||
| Application rate area sprayed | 1 | 16 | 0 | ||
| Application rate, gallons spray irrigation | 1 | 16 | 0 | ||
| Spray irrigation | 1 | 16 | 0 | ||
| Spray irrigation, application rate | 1 | 16 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 6 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 6 | 0 | ||
| Freeboard | 1 | 5 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 28, 2025 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| February 28, 2025 | WW SSO - Failure to report violation that may endanger public health 122.41(l)(7) | 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.
Watch this permit
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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 MO0055123 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.