Clean Water Act discharge permit · NPDES MO0104990
MAWC, HALLSVILLE WWTF, Hallsville, MO: NPDES MO0104990 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
MAWC, HALLSVILLE WWTF, held by City of Hallsville, holds NPDES permit MO0104990, which discharges to Tributary To Kelley Branch. EPA’s file records it issued January 1, 2020 and expiring December 31, 2024. 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 | MAWC, HALLSVILLE WWTF |
|---|---|
| Permittee as filed | City of Hallsville |
| NPDES ID | MO0104990 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 1, 2020 |
| Expiration date | December 31, 2024 |
| Address | Hallsville, MO 65255 |
| Receiving water | Tributary to Kelley Branch |
| Subwatershed | Upper Hinkson Creek (HUC 103001020601) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 19Pollutants on file
- 8Under a numeric limit
- 16With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Ammonia [as N] + unionized ammonia | 0 | 22 | 20 | July 31, 2011 | 397% over the limit |
| Coliform, fecal general | 0 | 9 | 7 | April 30, 2011 | 360% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 1 | 1 | March 31, 2007 | 7% over the limit |
| pH | 0 | 10 | 0 | ||
| Nitrogen, nitrate total [as NO3] | 3 | 7 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 3 | 5 | 0 | ||
| Depth to water level ft below landsurface | 3 | 5 | 0 | ||
| Rainfall | 0 | 5 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 3 | 0 | ||
| Spray irrigation | 10 | 2 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 0 | 2 | 0 | ||
| Nitrogen, nitrate [NO3], [water] | 0 | 2 | 0 | ||
| Nitrogen, Kjeldahl, total [TKN] [water] | 0 | 2 | 0 | ||
| Application rate area sprayed | 10 | 1 | 0 | ||
| Flow rate | 0 | 1 | 0 | ||
| Flow, gallons/batch | 0 | 1 | 0 | ||
| Application rate, gallons spray irrigation | 10 | 0 | 0 | ||
| Spray irrigation, application rate | 10 | 0 | 0 | ||
| Precipitation volume | 6 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 13, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| February 13, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| March 30, 2017 | Reporting Violations - Improper/ Incorrect Reporting | 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 MO0104990 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.