Clean Water Act discharge permit · NPDES OH0024881
DAYTON WWTP, Dayton, OH: NPDES OH0024881 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 56Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
DAYTON WWTP, held by Dayton, City of, holds NPDES permit OH0024881, which discharges to Great Miami River. EPA’s file records it issued March 25, 2022 and expiring April 30, 2027. 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 | DAYTON WWTP |
|---|---|
| Permittee as filed | Dayton, City of |
| NPDES ID | OH0024881 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 25, 2022 |
| Expiration date | April 30, 2027 |
| Address | Dayton, OH 45418 |
| Receiving water | Great Miami River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Town of Oakwood-Great Miami River (HUC 050800020105) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 58Pollutants on file
- 56Under a numeric limit
- 32With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 26 | 16 | 10 | April 30, 2015 | 209% over the limit |
| Chlorine, total residual | 3 | 11 | 10 | June 30, 2022 | 1,192% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 26 | 16 | 4 | August 31, 2024 | 301% over the limit |
| Coliform, fecal MF, MFC broth, 44.5 C | 0 | 6 | 4 | July 31, 2016 | 99,999% over the limit |
| Oxygen, dissolved [DO] | 3 | 6 | 3 | March 31, 2019 | 100% over the limit |
| Nitrogen, ammonia total [as N] | 28 | 10 | 2 | June 30, 2019 | 65% over the limit |
| Mercury, total low level | 8 | 5 | 1 | June 30, 2020 | 14% over the limit |
| pH, minimum | 4 | 3 | 1 | January 31, 2005 | |
| Nitrite + Nitrate total [as N] | 10 | 12 | 0 | ||
| Phosphorus, total [as P] | 10 | 6 | 0 | ||
| E. coli, MTEC-MF | 10 | 6 | 0 | ||
| Temperature, water deg. centigrade | 8 | 6 | 0 | ||
| Solids, total dissolved- 180 deg. C | 6 | 6 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 12 | 4 | 0 | ||
| Phosphate, ortho, dissolved [as P] | 8 | 4 | 0 | ||
| Heptachlor | 6 | 4 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Overflows | 2 | 4 | 0 | ||
| Nickel, total recoverable | 8 | 2 | 0 | ||
| Zinc, total recoverable | 8 | 2 | 0 | ||
| Cadmium, total recoverable | 8 | 2 | 0 | ||
| Lead, total recoverable | 8 | 2 | 0 | ||
| Chromium, total recoverable | 8 | 2 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 8 | 2 | 0 | ||
| Copper, total recoverable | 6 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 2 | 0 | ||
| Cyanide, free available | 6 | 2 | 0 | ||
| pH, maximum | 4 | 2 | 0 | ||
| Cyanide, total [as CN] | 2 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 2 | 0 | ||
| Di[2-ethylhexyl] phthalate [DEHP] | 0 | 2 | 0 | ||
| Oil and grease, hexane extr method | 3 | 1 | 0 | ||
| Pentachlorophenol | 8 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 6 | 0 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 6 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 6 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 6 | 0 | 0 | ||
| Chlorinated dibenzo-p-dioxins, effluent | 6 | 0 | 0 | ||
| Biosolids weight indluding admixtures | 4 | 0 | 0 | ||
| Sludge weight, dry | 4 | 0 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 4 | 0 | 0 | ||
| Duration of discharge | 4 | 0 | 0 | ||
| Nitrogen, ammonia in bottom deposits | 2 | 0 | 0 | ||
| Phosphorous, total, in bottom deposits | 2 | 0 | 0 | ||
| Potassium, in bottom deposits | 2 | 0 | 0 | ||
| %Effect Static Renewal 48Hr Acute Ceriodaphnia dubia | 2 | 0 | 0 | ||
| %Effect Static Renewal 96Hr Acute Pimephales promelas | 2 | 0 | 0 | ||
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| %Effect Static Renewal 7Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| Arsenic, dry weight | 1 | 0 | 0 | ||
| Cadmium, in bottom deposits [dry wgt] | 1 | 0 | 0 | ||
| Copper in bottom deposits [dry wgt] | 1 | 0 | 0 | ||
| Lead, total dry weight [as Pb] | 1 | 0 | 0 | ||
| Nickel, tot in bottom deposits [dry wgt] | 1 | 0 | 0 | ||
| Zinc in bottom deposits [dry wgt] | 1 | 0 | 0 | ||
| Selenium, dry weight | 1 | 0 | 0 | ||
| Mercury, tot in bot deposits [dry wgt] | 1 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 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 OH0024881.
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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.