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Sewage treatment plant, major discharger, Warren, Ohio. NPDES permit OH0027987, in force until Nov 30, 2028. Last 12 months: over a limit 16 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Solids, total suspended, monthly average | 2000 | ≤ 1211 kg/d | 65% |
| October 2025 | Solids, total suspended, monthly average | 43.8 | ≤ 20 mg/L | 119% |
| October 2025 | Solids, total suspended, weekly maximum | 4150 | ≤ 1817 kg/d | 128% |
| October 2025 | Solids, total suspended, weekly maximum | 83.8 | ≤ 30 mg/L | 179% |
| October 2025 | pH, minimum, daily minimum | 6.1 | ≥ 6.5 SU | — |
| March 2026 | Solids, total suspended, monthly average | 41.3 | ≤ 20 mg/L | 107% |
| March 2026 | Solids, total suspended, monthly average | 5040 | ≤ 1211 kg/d | 316% |
| March 2026 | Solids, total suspended, weekly maximum | 113 | ≤ 30 mg/L | 277% |
| March 2026 | Solids, total suspended, weekly maximum | 15700 | ≤ 1817 kg/d | 764% |
| April 2026 | Oxygen, dissolved [DO], daily minimum | 4.5 | ≥ 5 mg/L | 10% |
| April 2026 | Solids, total suspended, monthly average | 2210 | ≤ 1211 kg/d | 82% |
| April 2026 | Solids, total suspended, weekly maximum | 44.2 | ≤ 30 mg/L | 47% |
| April 2026 | Solids, total suspended, weekly maximum | 6900 | ≤ 1817 kg/d | 280% |
| May 2026 | Solids, total suspended, monthly average | 1350 | ≤ 1211 kg/d | 11% |
| May 2026 | Solids, total suspended, weekly maximum | 4740 | ≤ 1817 kg/d | 161% |
| May 2026 | Solids, total suspended, weekly maximum | 60.6 | ≤ 30 mg/L | 102% |
| 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 | ≥ 5 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 1211 kg/d | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 1817 kg/d | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 4.5 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 22 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 182 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 909 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 273 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 1332 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 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 |
| Phosphate, ortho, dissolved [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphate, ortho, dissolved [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | 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 |
| Chloroform | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Chloroform | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 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 | ≤ .024 mg/L | May–Oct | 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 |
| Cyanide, free available | monthly average | report only (ug/L) | all year | 001 |
| Cyanide, free available | daily maximum | report only (ug/L) | all year | 001 |
| Toxicity [acute], Ceriodaphnia dubia | monthly average | report only (tox acute) | Jul | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (tox acute) | Jul | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | monthly average | report only (tox chronic) | Jul | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | report only (tox chronic) | Jul | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | monthly average | report only (tox acute) | Jul | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox acute) | Jul | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | monthly average | report only (tox chronic) | Jul | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox chronic) | Jul | 001 |
| pH, maximum | daily maximum | ≤ 9 SU | all year | 001 |
| pH, minimum | daily minimum | ≥ 6.5 SU | all year | 001 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 12 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 18 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 727 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 1090 kg/d | all year | 001 |
| Overflows | monthly average | report only (occur/mo) | all year | 300 |
| Overflows | daily maximum | report only (occur/mo) | all year | 300 |
| Nitrogen, ammonia in bottom deposits | monthly average | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Nitrogen, ammonia in bottom deposits | daily maximum | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Phosphorous, total, in bottom deposits | monthly average | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Phosphorous, total, in bottom deposits | daily maximum | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Potassium, in bottom deposits | monthly average | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Potassium, in bottom deposits | daily maximum | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Arsenic, dry weight | daily maximum | ≤ 75 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Cadmium, in bottom deposits [dry wgt] | daily maximum | ≤ 85 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Copper in bottom deposits [dry wgt] | daily maximum | ≤ 4300 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Lead, total dry weight [as Pb] | daily maximum | ≤ 840 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Nickel, tot in bottom deposits [dry wgt] | daily maximum | ≤ 420 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Zinc in bottom deposits [dry wgt] | daily maximum | ≤ 7500 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Selenium, dry weight | daily maximum | ≤ 100 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Biosolids weight indluding admixtures | monthly average | report only (dry ton) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Fecal coliform in sludge, CFU/gram | daily maximum | ≤ 2000000 CFU/g | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Sludge weight, dry | monthly average | report only (dry ton) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Sludge weight, dry | daily maximum | report only (dry ton) | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Mercury, tot in bot deposits [dry wgt] | daily maximum | ≤ 57 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Molybdenum, sludge, total, dry weight [as Mo] | daily maximum | ≤ 75 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 581 |
| Nitrogen, ammonia in bottom deposits | monthly average | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Nitrogen, ammonia in bottom deposits | daily maximum | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Phosphorous, total, in bottom deposits | monthly average | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Phosphorous, total, in bottom deposits | daily maximum | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Potassium, in bottom deposits | monthly average | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Potassium, in bottom deposits | daily maximum | report only (mg/kg) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Arsenic, dry weight | monthly average | ≤ 41 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Arsenic, dry weight | daily maximum | ≤ 75 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Cadmium, in bottom deposits [dry wgt] | monthly average | ≤ 39 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Cadmium, in bottom deposits [dry wgt] | daily maximum | ≤ 85 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Copper in bottom deposits [dry wgt] | monthly average | ≤ 1500 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Copper in bottom deposits [dry wgt] | daily maximum | ≤ 4300 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Lead, total dry weight [as Pb] | monthly average | ≤ 300 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Lead, total dry weight [as Pb] | daily maximum | ≤ 840 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Nickel, tot in bottom deposits [dry wgt] | monthly average | ≤ 420 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Nickel, tot in bottom deposits [dry wgt] | daily maximum | ≤ 420 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Zinc in bottom deposits [dry wgt] | monthly average | ≤ 2800 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Zinc in bottom deposits [dry wgt] | daily maximum | ≤ 7500 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Selenium, dry weight | monthly average | ≤ 100 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Selenium, dry weight | daily maximum | ≤ 100 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Fecal coliform | daily maximum | ≤ 1000 MPN/g | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Biosolids weight indluding admixtures | monthly average | report only (dry ton) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Sludge weight, dry | monthly average | report only (dry ton) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Sludge weight, dry | daily maximum | report only (dry ton) | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Mercury, tot in bot deposits [dry wgt] | monthly average | ≤ 17 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Mercury, tot in bot deposits [dry wgt] | daily maximum | ≤ 57 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Molybdenum, sludge, total, dry weight [as Mo] | monthly average | ≤ 75 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Molybdenum, sludge, total, dry weight [as Mo] | daily maximum | ≤ 75 mg/kg | Feb, Apr, Jun, Aug, Oct, Dec | 584 |
| Biosolids weight indluding admixtures | monthly average | report only (dry ton) | Dec | 586 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | Dec | 586 |
| Biosolids weight indluding admixtures | monthly average | report only (dry ton) | Dec | 588 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | Dec | 588 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 601 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 601 |
| Cyanide, total [as CN] | monthly average | report only (mg/L) | all year | 601 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 601 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 601 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 601 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 601 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 601 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 601 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 601 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 601 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 601 |
| Chromium, total recoverable | monthly average | report only (ug/L) | all year | 601 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | all year | 601 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 601 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 601 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | all year | 601 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | 601 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 601 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 601 |
| pH, maximum | daily maximum | report only (SU) | all year | 601 |
| pH, minimum | daily minimum | report only (SU) | 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 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 801 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 801 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 801 |
| pH | daily minimum | report only (SU) | all year | 801 |
| pH | daily maximum | report only (SU) | all year | 801 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 801 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 801 |
| E. coli, MTEC-MF | monthly geometric mean | report only (MPN/100mL) | Jun–Aug | 801 |
| E. coli, MTEC-MF | daily maximum | report only (MPN/100mL) | Jun–Aug | 801 |
| %Effect Static Renewal 48Hr Acute Ceriodaphnia dubia | monthly average | report only (%) | Jul | 801 |
| %Effect Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | report only (%) | Jul | 801 |
| %Effect Static Renewal 96Hr Acute Pimephales promelas | monthly average | report only (%) | Jul | 801 |
| %Effect Static Renewal 96Hr Acute Pimephales promelas | daily maximum | report only (%) | Jul | 801 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average | report only (%) | Jul | 801 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | report only (%) | Jul | 801 |
| %Effect Static Renewal 7Day Chronic Pimephales promelas | monthly average | report only (%) | Jul | 801 |
| %Effect Static Renewal 7Day Chronic Pimephales promelas | daily maximum | report only (%) | Jul | 801 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 901 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 901 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 901 |
| pH | daily minimum | report only (SU) | all year | 901 |
| pH | daily maximum | report only (SU) | all year | 901 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 901 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 901 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 901 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 901 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 901 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 901 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 901 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 901 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 901 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 901 |
| E. coli, MTEC-MF | monthly geometric mean | report only (MPN/100mL) | Jun–Aug | 901 |
| E. coli, MTEC-MF | daily maximum | report only (MPN/100mL) | Jun–Aug | 901 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Mercury, total low level, daily maximum | 0.1 kg/d | new | — | — |
| Mercury, total low level, daily maximum | 1700 ng/L | new | 9.04 ng/L (11 values) | 0.00532× |
| Mercury, total low level, monthly average | 12 ng/L | new | 6.55 ng/L (11 values) | 0.546× |
| Mercury, total low level, monthly average | 0.00073 kg/d | new | — | — |
Cited limits by parameter: Ohio's rules and the federal ones.
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