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Sewerage Systems, Warren, Ohio. NPDES permit OH0107433, in force until Nov 30, 2030. Last 12 months: over a limit 22 times (last August 2026), 52 required values missing, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Solids, total suspended, weekly maximum | 25 | ≤ 18 mg/L | 39% |
| February 2026 | Solids, total suspended, monthly average | 16 | ≤ 12 mg/L | 33% |
| February 2026 | Solids, total suspended, monthly average | 16 | ≤ 12 mg/L | 33% |
| February 2026 | Solids, total suspended, monthly average | 3 | ≤ 2.4 kg/d | 25% |
| February 2026 | Solids, total suspended, monthly average | 3 | ≤ 2.4 kg/d | 25% |
| February 2026 | Solids, total suspended, weekly maximum | 32 | ≤ 18 mg/L | 78% |
| February 2026 | Solids, total suspended, weekly maximum | 32 | ≤ 18 mg/L | 78% |
| February 2026 | Solids, total suspended, weekly maximum | 8.9 | ≤ 3.6 kg/d | 147% |
| February 2026 | Solids, total suspended, weekly maximum | 8.9 | ≤ 3.6 kg/d | 147% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 2 | ≤ .59 kg/d | 239% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 26 | ≤ 3 mg/L | 767% |
| March 2026 | Nitrogen, ammonia total [as N], weekly maximum | 4 | ≤ .89 kg/d | 349% |
| March 2026 | Nitrogen, ammonia total [as N], weekly maximum | 52 | ≤ 4.5 mg/L | 1056% |
| March 2026 | Solids, total suspended, monthly average | 18 | ≤ 12 mg/L | 50% |
| March 2026 | Solids, total suspended, weekly maximum | 36 | ≤ 18 mg/L | 100% |
| April 2026 | Solids, total suspended, monthly average | 24 | ≤ 12 mg/L | 100% |
| April 2026 | Solids, total suspended, monthly average | 3.8 | ≤ 2.4 kg/d | 58% |
| April 2026 | Solids, total suspended, weekly maximum | 47 | ≤ 18 mg/L | 161% |
| April 2026 | Solids, total suspended, weekly maximum | 6.5 | ≤ 3.6 kg/d | 81% |
| May 2026 | Solids, total suspended, weekly maximum | 21 | ≤ 18 mg/L | 17% |
| August 2026 | Solids, total suspended, weekly maximum | 20 | ≤ 18 mg/L | 11% |
| August 2026 | Solids, total suspended, weekly maximum | 5.9 | ≤ 3.6 kg/d | 64% |
| 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 | 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 | ≤ 12 mg/L | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 18 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 2.4 kg/d | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 3.6 kg/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 1.5 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 4.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .2 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .59 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ .3 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ .89 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | Feb, Apr, Jun, Aug, Oct, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | Feb, Apr, Jun, Aug, Oct, Dec | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Feb, Apr, Jun, Aug, Oct, Dec | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Feb, Apr, Jun, Aug, Oct, Dec | 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 |
| Turbidity [severity] | monthly average | report only (severity) | all year | 001 |
| Turbidity [severity] | daily maximum | report only (severity) | 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) | Jun, Dec | 001 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | Jun, Dec | 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 | ≤ 2 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 3 kg/d | all year | 001 |
| Sludge waste from secondary clarifiers | monthly average | report only (gal) | Dec | 588 |
| Sludge waste from secondary clarifiers | daily maximum | report only (gal) | Dec | 588 |
Cited limits by parameter: Ohio's rules and the federal ones.
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