Clean Water Act discharge permit · NPDES OH0026921
OTTAWA WASTEWATER TREATMENT PLANT, Ottawa, OH: NPDES OH0026921 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 56Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
OTTAWA WASTEWATER TREATMENT PLANT, held by Village of Ottawa, holds NPDES permit OH0026921, which discharges to Blanchard River. EPA’s file records it issued July 12, 2019 and expiring July 31, 2024. 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 | OTTAWA WASTEWATER TREATMENT PLANT |
|---|---|
| Permittee as filed | Village of Ottawa |
| NPDES ID | OH0026921 |
| 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 | July 12, 2019 |
| Expiration date | July 31, 2024 |
| Address | Ottawa, OH 45875 |
| Receiving water | Blanchard River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Pike Run-Blanchard River (HUC 041000080602) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 57Pollutants on file
- 56Under a numeric limit
- 43With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 8 | 54 | 38 | April 30, 2022 | 436% over the limit |
| Mercury, total low level | 6 | 55 | 25 | February 28, 2026 | 772% over the limit |
| Solids, total suspended | 8 | 31 | 19 | September 30, 2022 | 475% over the limit |
| E. coli, MTEC-MF | 6 | 23 | 11 | September 30, 2023 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 10 | 20 | 4 | September 30, 2016 | 93% over the limit |
| Oxygen, dissolved [DO] | 3 | 7 | 1 | April 30, 2026 | 80% over the limit |
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 5 | 1 | June 30, 2025 | 21% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 12 | 12 | 0 | ||
| Temperature, water deg. centigrade | 6 | 12 | 0 | ||
| Nitrite + Nitrate total [as N] | 6 | 12 | 0 | ||
| pH | 4 | 8 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 8 | 0 | ||
| Lead, total recoverable | 4 | 6 | 0 | ||
| Nickel, total recoverable | 4 | 4 | 0 | ||
| Zinc, total recoverable | 4 | 4 | 0 | ||
| Cadmium, total recoverable | 4 | 4 | 0 | ||
| Chromium, total recoverable | 4 | 4 | 0 | ||
| Copper, total recoverable | 4 | 4 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 4 | 4 | 0 | ||
| Biosolids weight indluding admixtures | 4 | 4 | 0 | ||
| %Effect Static Renewal 48Hr Acute Ceriodaphnia dubia | 4 | 4 | 0 | ||
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 4 | 0 | ||
| Nitrogen, ammonia in bottom deposits | 2 | 4 | 0 | ||
| Phosphorous, total, in bottom deposits | 2 | 4 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 4 | 0 | ||
| Potassium, in bottom deposits | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| pH, maximum | 2 | 4 | 0 | ||
| pH, minimum | 2 | 4 | 0 | ||
| Solids, total dissolved- 180 deg. C | 2 | 4 | 0 | ||
| Overflows | 2 | 4 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 4 | 0 | ||
| Oil and grease, hexane extr method | 1 | 2 | 0 | ||
| Arsenic, dry weight | 1 | 2 | 0 | ||
| Cadmium, in bottom deposits [dry wgt] | 1 | 2 | 0 | ||
| Copper in bottom deposits [dry wgt] | 1 | 2 | 0 | ||
| Lead, total dry weight [as Pb] | 1 | 2 | 0 | ||
| Nickel, tot in bottom deposits [dry wgt] | 1 | 2 | 0 | ||
| Zinc in bottom deposits [dry wgt] | 1 | 2 | 0 | ||
| Selenium, dry weight | 1 | 2 | 0 | ||
| Mercury, tot in bot deposits [dry wgt] | 1 | 2 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 1 | 2 | 0 | ||
| Fecal coliform in sludge, CFU/gram | 0 | 2 | 0 | ||
| Selenium, total recoverable | 6 | 0 | 0 | ||
| Cyanide, total [as CN] | 4 | 0 | 0 | ||
| Sludge weight, dry | 4 | 0 | 0 | ||
| %Effect Static Renewal 96Hr Acute Pimephales promelas | 4 | 0 | 0 | ||
| %Effect Static Renewal 7Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| Phosphate, ortho, dissolved [as P] | 2 | 0 | 0 | ||
| Cyanide, free available | 2 | 0 | 0 | ||
| Bypass Volume | 2 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 2 | 0 | 0 | ||
| Bypass valve | 2 | 0 | 0 | ||
| Bypass of treatment | 2 | 0 | 0 | ||
| Fecal coliform | 1 | 0 | 0 | ||
| Chlorine, total residual | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 4, 2026 | Effluent Violations - Narrative Effluent Violation | ST6 |
| March 4, 2026 | 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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.