Clean Water Act discharge permit · NPDES MO0087122
CALHOUN WWTF, Calhoun, MO: NPDES MO0087122 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
CALHOUN WWTF, held by City of Calhoun, holds NPDES permit MO0087122, which discharges to Middle Fk. Tebo Cr.. EPA’s file records it issued December 23, 2020 and expiring September 30, 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 | CALHOUN WWTF |
|---|---|
| Permittee as filed | City of Calhoun |
| NPDES ID | MO0087122 |
| 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 23, 2020 |
| Expiration date | September 30, 2025 |
| Address | Calhoun, MO 65323 |
| Receiving water | Middle Fk. Tebo Cr. |
| Subwatershed | Middle Fork Tebo Creek (HUC 102901080801) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 12Pollutants on file
- 9Under a numeric limit
- 10With a violation of any kind
- 8With 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 | 25 | 25 | May 31, 2013 | 379% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 31 | 23 | May 31, 2020 | 886% over the limit |
| E. coli, colony forming units [CFU] | 0 | 13 | 5 | September 30, 2016 | 317% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 15 | 3 | February 28, 2015 | 83% over the limit |
| BOD, 5-day, percent removal | 1 | 3 | 3 | May 31, 2020 | 213% over the limit |
| Solids, total suspended | 3 | 14 | 2 | February 28, 2015 | 67% over the limit |
| pH | 2 | 85 | 1 | October 31, 2015 | |
| Coliform, fecal general | 0 | 1 | 1 | April 30, 2012 | 58% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 32 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 10 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0087122.
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 MO0087122 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.