Clean Water Act discharge permit · NPDES OH0146501
VILLAGE OF MIFFLIN WWTP, Mifflin, OH: NPDES OH0146501 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
VILLAGE OF MIFFLIN WWTP, held by Village of Mifflin, holds NPDES permit OH0146501, which discharges to Unnamed Trib To Ruffner Run. EPA’s file records it issued September 14, 2020 and expiring September 30, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | VILLAGE OF MIFFLIN WWTP |
|---|---|
| Permittee as filed | Village of Mifflin |
| NPDES ID | OH0146501 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Combined sewer overflows |
| Issued | September 14, 2020 |
| Expiration date | September 30, 2025 |
| Address | Mifflin, OH 44805 |
| Receiving water | unnamed trib to Ruffner Run |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 16Under a numeric limit
- 16With a violation of any kind
- 6With 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, total suspended | 4 | 142 | 130 | December 31, 2025 | 3,344% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 114 | 102 | July 31, 2026 | 4,630% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 61 | 49 | May 31, 2025 | 967% over the limit |
| Oxygen, dissolved [DO] | 1 | 9 | 6 | April 30, 2026 | 93% over the limit |
| E. coli, MTEC-MF | 2 | 7 | 5 | May 31, 2021 | 1,477% over the limit |
| pH | 2 | 9 | 3 | July 31, 2024 | |
| Temperature, water deg. centigrade | 2 | 6 | 0 | ||
| Phosphorus, total [as P] | 2 | 6 | 0 | ||
| Turbidity [severity] | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Solids, total dissolved- 180 deg. C | 2 | 6 | 0 | ||
| Overflows | 2 | 6 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 4 | 0 | ||
| Biosolids weight indluding admixtures | 2 | 2 | 0 | ||
| Sludge waste from secondary clarifiers | 0 | 2 | 0 | ||
| Sludge weight, dry | 2 | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 27, 2022 | Effluent Violations - Numeric effluent violation | EP6 |
| September 27, 2022 | WW SSO - Discharge to Waters | EP6 |
| September 27, 2022 | Management Practice Violations - Improper Operation and Maintenance | EP6 |
| September 27, 2022 | Management Practice Violations - No Licensed/Certified Operator | EP6 |
| September 27, 2022 | Monitoring Violations - Invalid/Unrepresentative Sample | EP6 |
| October 15, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| June 22, 2021 | Effluent Violations - Narrative Effluent Violation | ST6 |
| June 22, 2021 | WW SSO - Improper Operation and Maintenance | 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 OH0146501 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.