Clean Water Act discharge permit · NPDES OH0055221
SCIOTO HILLS WWTP, Powell, OH: NPDES OH0055221 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
SCIOTO HILLS WWTP, held by Delaware County Sanitary Engineer, holds NPDES permit OH0055221, which discharges to O'Shaunhenssy Reservoir. EPA’s file records it issued February 4, 2016 and expiring February 28, 2021. 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 | SCIOTO HILLS WWTP |
|---|---|
| Permittee as filed | Delaware County Sanitary Engineer |
| NPDES ID | OH0055221 |
| 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 | February 4, 2016 |
| Expiration date | February 28, 2021 |
| Address | Powell, OH 43015 |
| Receiving water | O'Shaunhenssy Reservoir |
| Subwatershed | Delaware Run-Olentangy River (HUC 050600011007) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 12Under a numeric limit
- 7With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 6 | 25 | 25 | October 31, 2021 | 262% over the limit |
| Solids, total suspended | 4 | 16 | 16 | February 28, 2022 | 340% over the limit |
| Oxygen, dissolved [DO] | 1 | 5 | 5 | June 30, 2023 | 22% over the limit |
| Coliform, fecal MF, MFC broth, 44.5 C | 0 | 4 | 4 | September 30, 2008 | 99,999% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 2 | 2 | September 30, 2020 | 60% over the limit |
| pH | 2 | 1 | 1 | January 31, 2008 | |
| E. coli, MTEC-MF | 2 | 1 | 1 | July 31, 2011 | 2,294% over the limit |
| Temperature, water deg. centigrade | 2 | 0 | 0 | ||
| Turbidity [severity] | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Sludge weight, dry | 2 | 0 | 0 | ||
| Overflows | 2 | 0 | 0 | ||
| Sludge waste from secondary clarifiers | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES OH0055221.
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 OH0055221 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.