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Electric Services, major discharger, Oak Harbor, Ohio. NPDES permit OH0003786, in force until Mar 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Oxidants, total residual | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 001 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 001 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 001 |
| Chlorination duration | daily maximum | report only (min) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 002 |
| Oil and grease, hexane extr method | monthly average | ≤ 15 mg/L | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | ≤ 20 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 002 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 002 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| pH | daily minimum | ≥ 6.5 SU | all year | 004 |
| pH | daily maximum | ≤ 9 SU | all year | 004 |
| Oxidants, total residual | daily maximum | report only (mg/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 004 |
| Chlorination duration | daily maximum | report only (min) | all year | 004 |
| Oxidants, total residual | monthly average | report only (mg/L) | all year | 091 |
| Oxidants, total residual | daily maximum | report only (mg/L) | all year | 091 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 091 |
| Chlorination duration | monthly average | report only (min) | all year | 091 |
| Chlorination duration | daily maximum | report only (min) | all year | 091 |
| Sludge waste from secondary clarifiers | monthly average | report only (gal) | Dec | 588 |
| Sludge waste from secondary clarifiers | daily maximum | report only (gal) | Dec | 588 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 601 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 601 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 601 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 601 |
| E. coli, MTEC-MF | monthly geometric mean | ≤ 126 MPN/100mL | May–Oct | 601 |
| E. coli, MTEC-MF | weekly geometric mean | ≤ 284 MPN/100mL | May–Oct | 601 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 601 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 601 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 602 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 602 |
| Oil and grease, hexane extr method | monthly average | ≤ 15 mg/L | all year | 602 |
| Oil and grease, hexane extr method | daily maximum | ≤ 20 mg/L | all year | 602 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 602 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 602 |
| Hydrazine | monthly average | report only (ug/L) | all year | 602 |
| Hydrazine | daily maximum | report only (ug/L) | all year | 602 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 801 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 801 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 801 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 801 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 801 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 801 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 31 Electric Services permits in Ohio.
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On EPA ECHO: Facility report · DMR history
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