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Sewage treatment plant, Middleport, Ohio. NPDES permit OH0026514 expired Mar 31, 2026; its limits still apply. Last 12 months: over a limit 3 times (last August 2026), 60 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | Coliform, fecal MF, MFC broth, 44.5 C, weekly geometric mean | 21900 | ≤ 2000 #/100mL | 995% |
| August 2026 | E. coli, MTEC-MF, monthly geometric mean | 150 | ≤ 126 MPN/100mL | 19% |
| August 2026 | E. coli, MTEC-MF, weekly geometric mean | 3690 | ≤ 284 MPN/100mL | 1199% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 62.5 kg/d | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 93.7 kg/d | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | ≤ 20.9 kg/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Zinc, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Lead, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Lead, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Chromium, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Copper, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Copper, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Coliform, fecal MF, MFC broth, 44.5 C | monthly geometric mean | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Coliform, fecal MF, MFC broth, 44.5 C | weekly geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| E. coli, MTEC-MF | monthly geometric mean | ≤ 126 MPN/100mL | May–Oct | 001 |
| E. coli, MTEC-MF | weekly geometric mean | ≤ 284 MPN/100mL | May–Oct | 001 |
| Rainfall | monthly average | report only (in) | all year | 001 |
| Rainfall | daily maximum | report only (in) | 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 | ≤ .038 mg/L | all year | 001 |
| Mercury, total low level | monthly average | report only (ng/L) | Dec | 001 |
| Mercury, total low level | daily maximum | report only (ng/L) | Dec | 001 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 52.1 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 83.3 kg/d | all year | 001 |
| Flow rate, instantaneous | monthly average | report only (gal/min) | all year | 005 |
| Flow rate, instantaneous | daily maximum | report only (gal/min) | all year | 005 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Coliform, fecal MF, MFC broth, 44.5 C | monthly geometric mean | report only (#/100mL) | all year | 005 |
| Coliform, fecal MF, MFC broth, 44.5 C | daily maximum | report only (#/100mL) | all year | 005 |
| Overflows | monthly average | report only (occur/mo) | all year | 005 |
| Overflows | daily maximum | report only (occur/mo) | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 005 |
| Duration of discharge | monthly average | report only (hr) | all year | 005 |
| Duration of discharge | daily maximum | report only (hr) | all year | 005 |
| Overflows | monthly average | report only (occur/mo) | all year | 007 |
| Overflows | daily maximum | report only (occur/mo) | all year | 007 |
| Overflows | monthly average | report only (occur/mo) | all year | 008 |
| Overflows | daily maximum | report only (occur/mo) | all year | 008 |
| Flow rate, instantaneous | monthly average | report only (gal/min) | all year | 009 |
| Flow rate, instantaneous | daily maximum | report only (gal/min) | all year | 009 |
| Overflows | monthly average | report only (occur/mo) | all year | 009 |
| Overflows | daily maximum | report only (occur/mo) | all year | 009 |
| Duration of discharge | monthly average | report only (hr) | all year | 009 |
| Duration of discharge | daily maximum | report only (hr) | all year | 009 |
| Overflows | monthly average | report only (occur/mo) | all year | 011 |
| Overflows | daily maximum | report only (occur/mo) | all year | 011 |
| Overflows | monthly average | report only (occur/mo) | all year | 300 |
| Overflows | daily maximum | report only (occur/mo) | all year | 300 |
| Biosolids weight indluding admixtures | monthly average | report only (dry ton) | all year | 586 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | all year | 586 |
| pH | daily minimum | report only (SU) | all year | 601 |
| pH | daily maximum | report only (SU) | all year | 601 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 601 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 601 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 601 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 601 |
Cited limits by parameter: Ohio's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/OH0026514 · MCP: https://passage-data.com/mcp