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Sewage treatment plant, New Richmond, Ohio. NPDES permit OH0021156 expired Jun 30, 2026; its limits still apply. Last 12 months: over a limit 36 times (last August 2026), 89 required values missing, 17 of 45 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Solids, total suspended, monthly average | 21.8 | ≤ 17 mg/L | 28% |
| November 2025 | Solids, total suspended, weekly maximum | 32.6 | ≤ 26 mg/L | 25% |
| February 2026 | Solids, total suspended, monthly average | 18.3 | ≤ 17 mg/L | 8% |
| February 2026 | Solids, total suspended, monthly average | 18.3 | ≤ 17 mg/L | 8% |
| February 2026 | Solids, total suspended, weekly maximum | 40.8 | ≤ 26 mg/L | 57% |
| February 2026 | Solids, total suspended, weekly maximum | 40.8 | ≤ 26 mg/L | 57% |
| March 2026 | Solids, total suspended, monthly average | 22 | ≤ 17 mg/L | 29% |
| March 2026 | Solids, total suspended, monthly average | 99.7 | ≤ 35.4 kg/d | 182% |
| March 2026 | Solids, total suspended, weekly maximum | 378 | ≤ 54.2 kg/d | 597% |
| March 2026 | Solids, total suspended, weekly maximum | 73.4 | ≤ 26 mg/L | 182% |
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 13.2 | ≤ 6.5 mg/L | 103% |
| April 2026 | Nitrogen, ammonia total [as N], weekly maximum | 21.9 | ≤ 9.8 mg/L | 123% |
| April 2026 | Solids, total suspended, monthly average | 22.7 | ≤ 17 mg/L | 34% |
| April 2026 | Solids, total suspended, weekly maximum | 56.3 | ≤ 54.2 kg/d | 4% |
| April 2026 | Solids, total suspended, weekly maximum | 63.1 | ≤ 26 mg/L | 143% |
| April 2026 | pH, daily maximum | 74 | ≤ 9 SU | — |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | 6.36 | ≤ 5.1 mg/L | 25% |
| May 2026 | Nitrogen, ammonia total [as N], weekly maximum | 10.7 | ≤ 7.7 mg/L | 39% |
| June 2026 | E. coli, MTEC-MF, monthly geometric mean | 3700 | ≤ 126 MPN/100mL | 2837% |
| June 2026 | E. coli, MTEC-MF, weekly geometric mean | 24000 | ≤ 240 MPN/100mL | 9900% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 22.7 | ≤ 5.1 mg/L | 345% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 23.6 | ≤ 10.7 kg/d | 121% |
| June 2026 | Nitrogen, ammonia total [as N], weekly maximum | 32.7 | ≤ 16.1 kg/d | 103% |
| June 2026 | Nitrogen, ammonia total [as N], weekly maximum | 32.9 | ≤ 7.7 mg/L | 327% |
| July 2026 | E. coli, MTEC-MF, monthly geometric mean | 22100 | ≤ 126 MPN/100mL | 17440% |
| July 2026 | E. coli, MTEC-MF, weekly geometric mean | 24000 | ≤ 240 MPN/100mL | 9900% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 14.6 | ≤ 5.1 mg/L | 186% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 14.8 | ≤ 10.7 kg/d | 38% |
| July 2026 | Nitrogen, ammonia total [as N], weekly maximum | 22.6 | ≤ 16.1 kg/d | 40% |
| July 2026 | Nitrogen, ammonia total [as N], weekly maximum | 30.1 | ≤ 7.7 mg/L | 291% |
| August 2026 | E. coli, MTEC-MF, monthly geometric mean | 130 | ≤ 126 MPN/100mL | 3% |
| August 2026 | E. coli, MTEC-MF, weekly geometric mean | 420 | ≤ 240 MPN/100mL | 75% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | 14.3 | ≤ 5.1 mg/L | 180% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | 18.4 | ≤ 10.7 kg/d | 72% |
| August 2026 | Nitrogen, ammonia total [as N], weekly maximum | 17.5 | ≤ 7.7 mg/L | 127% |
| August 2026 | Nitrogen, ammonia total [as N], weekly maximum | 29.2 | ≤ 16.1 kg/d | 81% |
| 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 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 17 mg/L | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 26 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 35.4 kg/d | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 54.2 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 | ≤ 5.1 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 7.7 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 9.8 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10.7 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 13.6 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 16.1 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 20.5 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 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Nickel, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Zinc, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Lead, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Lead, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Chromium, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Copper, total recoverable | daily maximum | ≤ 34 ug/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ .0708 kg/d | all year | 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 | ≤ 240 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 |
| Mercury, total low level | monthly average | ≤ 12 ng/L | Mar, Jun, Aug, Dec | 001 |
| Mercury, total low level | daily maximum | ≤ 1700 ng/L | Mar, Jun, Aug, Dec | 001 |
| Mercury, total low level | monthly average | ≤ .000025 kg/d | Mar, Jun, Aug, Dec | 001 |
| Mercury, total low level | daily maximum | ≤ .00354 kg/d | Mar, Jun, Aug, Dec | 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 | ≤ 14 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 21 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 29.2 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 43.8 kg/d | all year | 001 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 17 mg/L | all year | 002 |
| Solids, total suspended | weekly maximum | ≤ 26 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 35.4 kg/d | all year | 002 |
| Solids, total suspended | weekly maximum | ≤ 54.2 kg/d | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5.1 mg/L | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 9.8 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 7.7 mg/L | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 13.6 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10.7 kg/d | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 20.5 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 16.1 kg/d | May–Oct | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 002 |
| Nickel, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Zinc, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Lead, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Lead, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Chromium, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Copper, total recoverable | daily maximum | ≤ 34 ug/L | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ .0708 kg/d | all year | 002 |
| 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 MPN/100mL | May–Oct | 002 |
| E. coli, MTEC-MF | weekly geometric mean | ≤ 240 MPN/100mL | May–Oct | 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 |
| Mercury, total low level | monthly average | ≤ 12 ng/L | Mar, Jun, Aug, Dec | 002 |
| Mercury, total low level | daily maximum | ≤ 1700 ng/L | Mar, Jun, Aug, Dec | 002 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 14 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 21 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 29.2 kg/d | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 43.8 kg/d | all year | 002 |
| 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) | Dec | 586 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | Dec | 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 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 601 |
| Copper, total recoverable | daily maximum | report only (ug/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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