Clean Water Act discharge permit · NPDES MO0099678
BLACKBURN WWTF, Blackburn, MO: NPDES MO0099678 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
BLACKBURN WWTF, held by City of Blackburn, holds NPDES permit MO0099678, which discharges to East Fork Elm Branch. EPA’s file records it issued May 31, 2017 and expiring December 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 | BLACKBURN WWTF |
|---|---|
| Permittee as filed | City of Blackburn |
| NPDES ID | MO0099678 |
| 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 | May 31, 2017 |
| Expiration date | December 31, 2021 |
| Address | Blackburn, MO 65321 |
| Receiving water | East Fork Elm Branch |
| Subwatershed | Elm Branch (HUC 103001040401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 11Under a numeric limit
- 5With a violation of any kind
- 2With 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 | 2 | 4 | 2 | May 31, 2007 | 33% over the limit |
| Solids, total suspended | 2 | 3 | 1 | June 30, 2006 | 3% over the limit |
| pH | 1 | 42 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 6 | 0 | 0 | ||
| E. coli | 4 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 24, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| August 14, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| August 14, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 8, 2020 | 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.
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 MO0099678 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.