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Sewage treatment plant, major discharger, Cincinnati, Ohio. NPDES permit OH0025461 expired Aug 31, 2023; its limits still apply. Last 12 months: over a limit 4 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | E. coli, MTEC-MF, monthly geometric mean | 148 | ≤ 126 #/100mL | 17% |
| June 2026 | E. coli, MTEC-MF, weekly geometric mean | 452 | ≤ 240 #/100mL | 88% |
| June 2026 | Oxidants, total residual, daily maximum | .34 | ≤ .33 mg/L | 3% |
| August 2026 | Oxidants, total residual, daily maximum | .35 | ≤ .33 mg/L | 6% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Coliform, fecal MF, MFC broth, 44.5 C | monthly geometric mean | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Coliform, fecal MF, MFC broth, 44.5 C | weekly geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| E. coli, MTEC-MF | monthly geometric mean | ≤ 126 #/100mL | May–Oct | 002 |
| E. coli, MTEC-MF | weekly geometric mean | ≤ 240 #/100mL | May–Oct | 002 |
| Oxidants, total residual | daily maximum | ≤ .33 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 |
| Toxicity [acute], Ceriodaphnia dubia | monthly average | report only (tox acute) | Jun, Dec | 002 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (tox acute) | Jun, Dec | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | monthly average | report only (tox acute) | Jun, Dec | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox acute) | Jun, Dec | 002 |
| pH, maximum | daily maximum | ≤ 9 SU | all year | 002 |
| pH, minimum | daily minimum | ≥ 6 SU | all year | 002 |
| E. coli, MTEC-MF | monthly geometric mean | report only (#/100mL) | May–Oct | 004 |
| E. coli, MTEC-MF | daily maximum | report only (#/100mL) | May–Oct | 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 |
| pH, maximum | daily maximum | report only (SU) | all year | 004 |
| pH, minimum | daily minimum | report only (SU) | all year | 004 |
| Bypass valve | monthly average | report only (occur/mo) | all year | 005 |
| Bypass valve | daily maximum | report only (occur/mo) | all year | 005 |
| Arsenic, dry weight | monthly average | report only (mg/kg) | all year | 585 |
| Arsenic, dry weight | daily maximum | report only (mg/kg) | all year | 585 |
| Beryllium, in bottom deposits [dry wgt] | monthly average | report only (mg/kg) | all year | 585 |
| Beryllium, in bottom deposits [dry wgt] | daily maximum | report only (mg/kg) | all year | 585 |
| Chromium, total in bot dep [wet wgt] | monthly average | report only (mg/kg) | all year | 585 |
| Chromium, total in bot dep [wet wgt] | daily maximum | report only (mg/kg) | all year | 585 |
| Cadmium, in bottom deposits [dry wgt] | monthly average | report only (mg/kg) | all year | 585 |
| Cadmium, in bottom deposits [dry wgt] | daily maximum | report only (mg/kg) | all year | 585 |
| Lead, total dry weight [as Pb] | monthly average | report only (mg/kg) | all year | 585 |
| Lead, total dry weight [as Pb] | daily maximum | report only (mg/kg) | all year | 585 |
| Nickel, tot in bottom deposits [dry wgt] | monthly average | report only (mg/kg) | all year | 585 |
| Nickel, tot in bottom deposits [dry wgt] | daily maximum | report only (mg/kg) | all year | 585 |
| Biosolids weight indluding admixtures | monthly average | report only (dry ton) | all year | 585 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | all year | 585 |
| Mercury, tot in bot deposits [dry wgt] | monthly average | report only (mg/kg) | all year | 585 |
| Mercury, tot in bot deposits [dry wgt] | daily maximum | report only (mg/kg) | all year | 585 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 602 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 602 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 602 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 602 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 602 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 602 |
| Cyanide, total [as CN] | monthly average | report only (mg/L) | all year | 602 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 602 |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year | 602 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | 602 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 602 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 602 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 602 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 602 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 602 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 602 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 602 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 602 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 602 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 602 |
| Chromium, total recoverable | monthly average | report only (ug/L) | all year | 602 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | all year | 602 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 602 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 602 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | all year | 602 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | 602 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 602 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 602 |
| pH, maximum | daily maximum | report only (SU) | all year | 602 |
| pH, minimum | daily minimum | report only (SU) | all year | 602 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 602 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 602 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 603 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 603 |
| Bypass Volume | monthly average | report only (Mgal) | all year | 603 |
| Bypass Volume | daily maximum | report only (Mgal) | all year | 603 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 603 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 603 |
| Bypass valve | monthly average | report only (occur/mo) | all year | 603 |
| Bypass valve | daily maximum | report only (occur/mo) | all year | 603 |
| Bypass of treatment | monthly average | report only (hr/mo) | all year | 603 |
| Bypass of treatment | daily maximum | report only (hr/mo) | all year | 603 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 604 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 604 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 604 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 604 |
| Solids, total suspended | weekly maximum | ≤ 45 mg/L | all year | 604 |
| Solids, total suspended | monthly average | ≤ 19305 kg/d | all year | 604 |
| Solids, total suspended | weekly maximum | ≤ 28958 kg/d | all year | 604 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | all year | 604 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 604 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 604 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 604 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 604 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 604 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 604 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 604 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 604 |
| Phosphate, ortho, dissolved [as P] | monthly average | report only (mg/L) | all year | 604 |
| Phosphate, ortho, dissolved [as P] | daily maximum | report only (mg/L) | all year | 604 |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year | 604 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | 604 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 604 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 604 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 604 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 604 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 604 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 604 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 604 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 604 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 604 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 604 |
| Chromium, total recoverable | monthly average | report only (ug/L) | all year | 604 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | all year | 604 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 604 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 604 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | all year | 604 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | 604 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 604 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 604 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 604 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 604 |
| Cyanide, free available | monthly average | report only (ug/L) | all year | 604 |
| Cyanide, free available | daily maximum | report only (ug/L) | all year | 604 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 604 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 604 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 604 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 40 mg/L | all year | 604 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 16088 kg/d | all year | 604 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 25741 kg/d | all year | 604 |
| %Effect Static Renewal 48Hr Acute Ceriodaphnia dubia | monthly average | report only (%) | Jun, Dec | 801 |
| %Effect Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | report only (%) | Jun, Dec | 801 |
| %Effect Static Renewal 96Hr Acute Pimephales promelas | monthly average | report only (%) | Jun, Dec | 801 |
| %Effect Static Renewal 96Hr Acute Pimephales promelas | daily maximum | report only (%) | Jun, Dec | 801 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | May–Oct | 802 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May–Oct | 802 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | May–Oct | 802 |
| pH | daily minimum | report only (SU) | May–Oct | 802 |
| pH | daily maximum | report only (SU) | May–Oct | 802 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | May–Oct | 802 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | May–Oct | 802 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | May–Oct | 802 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | May–Oct | 802 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | May–Oct | 802 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | May–Oct | 802 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | May–Oct | 802 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | May–Oct | 802 |
| Copper, total recoverable | monthly average | report only (ug/L) | May–Oct | 802 |
| Copper, total recoverable | daily maximum | report only (ug/L) | May–Oct | 802 |
| E. coli, MTEC-MF | monthly geometric mean | report only (#/100mL) | May–Oct | 802 |
| E. coli, MTEC-MF | daily maximum | report only (#/100mL) | May–Oct | 802 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | May–Oct | 902 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May–Oct | 902 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | May–Oct | 902 |
| pH | daily minimum | report only (SU) | May–Oct | 902 |
| pH | daily maximum | report only (SU) | May–Oct | 902 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | May–Oct | 902 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | May–Oct | 902 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | May–Oct | 902 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | May–Oct | 902 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | May–Oct | 902 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | May–Oct | 902 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | May–Oct | 902 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | May–Oct | 902 |
| Copper, total recoverable | monthly average | report only (ug/L) | May–Oct | 902 |
| Copper, total recoverable | daily maximum | report only (ug/L) | May–Oct | 902 |
| E. coli, MTEC-MF | monthly geometric mean | report only (#/100mL) | May–Oct | 902 |
| E. coli, MTEC-MF | daily maximum | report only (#/100mL) | May–Oct | 902 |
Cited limits by parameter: Ohio's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/OH0025461 · MCP: https://passage-data.com/mcp