Clean Water Act discharge permit · NPDES OH0020893
NAPOLEON WASTEWATER TREATMENT PLANT, Napoleon, OH: NPDES OH0020893 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 52Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
NAPOLEON WASTEWATER TREATMENT PLANT, held by City of Napoleon, holds NPDES permit OH0020893, which discharges to Maumee River. EPA’s file records it issued August 14, 2019 and expiring August 31, 2024. 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 | NAPOLEON WASTEWATER TREATMENT PLANT |
|---|---|
| Permittee as filed | City of Napoleon |
| NPDES ID | OH0020893 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 14, 2019 |
| Expiration date | August 31, 2024 |
| Address | Napoleon, OH 43545 |
| Receiving water | Maumee River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Oberhaus Creek (HUC 041000090205) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 53Pollutants on file
- 52Under a numeric limit
- 42With a violation of any kind
- 4With 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] | 28 | 44 | 4 | June 30, 2025 | 30% over the limit |
| Mercury, total low level | 10 | 31 | 1 | April 30, 2024 | 20% over the limit |
| pH, minimum | 3 | 11 | 1 | September 30, 2013 | |
| Oil and grease, hexane extr method | 2 | 6 | 1 | April 30, 2015 | 130% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 30 | 88 | 0 | ||
| Solids, total suspended | 22 | 88 | 0 | ||
| Phosphorus, total [as P] | 14 | 30 | 0 | ||
| Temperature, water deg. centigrade | 8 | 30 | 0 | ||
| Copper, total recoverable | 6 | 30 | 0 | ||
| Overflows | 18 | 20 | 0 | ||
| pH | 4 | 20 | 0 | ||
| Oxygen, dissolved [DO] | 6 | 15 | 0 | ||
| E. coli, MTEC-MF | 8 | 12 | 0 | ||
| Nickel, total recoverable | 6 | 12 | 0 | ||
| Zinc, total recoverable | 6 | 12 | 0 | ||
| Cadmium, total recoverable | 6 | 12 | 0 | ||
| Lead, total recoverable | 6 | 12 | 0 | ||
| Chromium, total recoverable | 6 | 12 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 6 | 12 | 0 | ||
| Nitrite + Nitrate total [as N] | 8 | 10 | 0 | ||
| Phosphate, ortho, dissolved [as P] | 4 | 10 | 0 | ||
| Rainfall | 4 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 10 | 0 | ||
| Biosolids weight indluding admixtures | 4 | 10 | 0 | ||
| Sludge weight, dry | 4 | 10 | 0 | ||
| Solids, total dissolved- 180 deg. C | 4 | 10 | 0 | ||
| pH, maximum | 3 | 10 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 10 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 10 | 8 | 0 | ||
| Nitrogen, ammonia in bottom deposits | 2 | 8 | 0 | ||
| Phosphorous, total, in bottom deposits | 2 | 8 | 0 | ||
| Potassium, in bottom deposits | 2 | 8 | 0 | ||
| Arsenic, dry weight | 1 | 4 | 0 | ||
| Cadmium, in bottom deposits [dry wgt] | 1 | 4 | 0 | ||
| Copper in bottom deposits [dry wgt] | 1 | 4 | 0 | ||
| Lead, total dry weight [as Pb] | 1 | 4 | 0 | ||
| Nickel, tot in bottom deposits [dry wgt] | 1 | 4 | 0 | ||
| Zinc in bottom deposits [dry wgt] | 1 | 4 | 0 | ||
| Selenium, dry weight | 1 | 4 | 0 | ||
| Mercury, tot in bot deposits [dry wgt] | 1 | 4 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 1 | 4 | 0 | ||
| Fecal coliform in sludge, CFU/gram | 0 | 4 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 16 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 4 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 4 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 4 | 0 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 3 | 0 | 0 | ||
| Flow, maximum during 24 hr period | 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 | ||
| Fecal coliform | 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 OH0020893.
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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Start the watch
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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 OH0020893 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.