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Sewage treatment plant, Sycamore, Ohio. NPDES permit OH0021989, in force until Oct 31, 2027. Last 12 months: over a limit 11 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | E. coli, MTEC-MF, monthly geometric mean | 1416 | ≤ 126 MPN/100mL | 1024% |
| October 2025 | E. coli, MTEC-MF, weekly geometric mean | 2420 | ≤ 284 MPN/100mL | 752% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 28.8 | ≤ 4.5 mg/L | 540% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 5.48 | ≤ 2.7 kg/d | 103% |
| February 2026 | Nitrogen, ammonia total [as N], weekly maximum | 11.5 | ≤ 4.1 kg/d | 180% |
| February 2026 | Nitrogen, ammonia total [as N], weekly maximum | 37.5 | ≤ 6.8 mg/L | 451% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 4.66 | ≤ 4.5 mg/L | 4% |
| March 2026 | Nitrogen, ammonia total [as N], weekly maximum | 13.6 | ≤ 6.8 mg/L | 100% |
| July 2026 | E. coli, MTEC-MF, monthly geometric mean | 580 | ≤ 126 MPN/100mL | 360% |
| July 2026 | E. coli, MTEC-MF, weekly geometric mean | 1120 | ≤ 284 MPN/100mL | 294% |
| August 2026 | E. coli, MTEC-MF, weekly geometric mean | 2420 | ≤ 284 MPN/100mL | 752% |
| 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 | ≥ 6 mg/L | May–Oct | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 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 | ≤ 18.2 kg/d | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 27.3 kg/d | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | Mar, Jun, Aug, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 3 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 6.8 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.2 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 1.8 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 4.1 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 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 |
| 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 |
| 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 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | Jan, Mar, May, Jul, Sep, Nov | 001 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | Jan, Mar, May, Jul, Sep, Nov | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 15 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6.1 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 9.1 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) | Dec | 581 |
| Nitrogen, ammonia in bottom deposits | daily maximum | report only (mg/kg) | Dec | 581 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/kg) | Dec | 581 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/kg) | Dec | 581 |
| Phosphorous, total, in bottom deposits | monthly average | report only (mg/kg) | Dec | 581 |
| Phosphorous, total, in bottom deposits | daily maximum | report only (mg/kg) | Dec | 581 |
| Potassium, in bottom deposits | monthly average | report only (mg/kg) | Dec | 581 |
| Potassium, in bottom deposits | daily maximum | report only (mg/kg) | Dec | 581 |
| Arsenic, dry weight | daily maximum | ≤ 75 mg/kg | Dec | 581 |
| Cadmium, in bottom deposits [dry wgt] | daily maximum | ≤ 85 mg/kg | Dec | 581 |
| Copper in bottom deposits [dry wgt] | daily maximum | ≤ 4300 mg/kg | Dec | 581 |
| Lead, total dry weight [as Pb] | daily maximum | ≤ 840 mg/kg | Dec | 581 |
| Nickel, tot in bottom deposits [dry wgt] | daily maximum | ≤ 420 mg/kg | Dec | 581 |
| Zinc in bottom deposits [dry wgt] | daily maximum | ≤ 7500 mg/kg | Dec | 581 |
| Selenium, dry weight | daily maximum | ≤ 100 mg/kg | Dec | 581 |
| Fecal coliform | daily maximum | ≤ 2000000 MPN/g | Dec | 581 |
| Biosolids weight indluding admixtures | monthly average | report only (dry ton) | Dec | 581 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | Dec | 581 |
| Sludge weight, dry | monthly average | report only (dry ton) | Dec | 581 |
| Sludge weight, dry | daily maximum | report only (dry ton) | Dec | 581 |
| Mercury, tot in bot deposits [dry wgt] | daily maximum | ≤ 57 mg/kg | Dec | 581 |
| Molybdenum, sludge, total, dry weight [as Mo] | daily maximum | ≤ 75 mg/kg | Dec | 581 |
| Biosolids weight indluding admixtures | monthly average | report only (dry ton) | Dec | 586 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | Dec | 586 |
| Sludge waste from secondary clarifiers | monthly average | report only (gal) | Dec | 588 |
| Sludge waste from secondary clarifiers | daily maximum | report only (gal) | 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 |
| 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 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 801 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 801 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 801 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 801 |
| E. coli, MTEC-MF | monthly geometric mean | report only (MPN/100mL) | May–Oct | 801 |
| E. coli, MTEC-MF | daily maximum | report only (MPN/100mL) | May–Oct | 801 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | Mar, Jun, Aug, Dec | 901 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Mar, Jun, Aug, Dec | 901 |
| pH | daily minimum | report only (SU) | Mar, Jun, Aug, Dec | 901 |
| pH | daily maximum | report only (SU) | Mar, Jun, Aug, Dec | 901 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 901 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 901 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 901 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 901 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 901 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 901 |
| E. coli, MTEC-MF | monthly geometric mean | report only (MPN/100mL) | May–Oct | 901 |
| E. coli, MTEC-MF | daily maximum | report only (MPN/100mL) | May–Oct | 901 |
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/OH0021989 · MCP: https://passage-data.com/mcp