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Sewage treatment plant, major discharger, Minot, North Dakota. NPDES permit ND0022896, in force until Mar 31, 2030. Last 12 months: over a limit 5 times (last August 2026), 1 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | E. coli, daily maximum | 1119.9 #/100mL | ≤ 409 #/100mL | 174% |
| July 2026 | E. coli, 30-day geometric mean | 209.2 #/100mL | ≤ 126 #/100mL | 66% |
| July 2026 | E. coli, daily maximum | 1413.6 #/100mL | ≤ 409 #/100mL | 246% |
| August 2026 | E. coli, 30-day geometric mean | 184.4 #/100mL | ≤ 126 #/100mL | 46% |
| August 2026 | E. coli, daily maximum | 770.1 #/100mL | ≤ 409 #/100mL | 88% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | daily minimum | report only (deg C) (alert, not enforceable) | all year |
| Temperature, water deg. centigrade | monthly average | report only (deg C) (alert, not enforceable) | all year |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) (alert, not enforceable) | all year |
| Temperature, water deg. centigrade | weekly average | report only (deg C) | all year |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year |
| Stream flow, instantaneous | monthly average | report only (cfs) | all year |
| Stream flow, instantaneous | daily maximum | report only (cfs) | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 25 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily minimum | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| pH | minimum | report only (SU) | all year |
| pH | maximum | report only (SU) | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | daily minimum | report only (mg/L) | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Solids, total suspended | daily maximum | report only (mg/L) | all year |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year |
| Nitrogen, total [as N] | monthly minimum | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly minimum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year |
| Cyanide, total [as CN] | daily average | report only (mg/L) | all year |
| Cyanide, total [as CN] | daily average | report only (mg/L) | all year |
| Arsenic, total [as As] | daily average | report only (mg/L) | all year |
| Arsenic, total [as As] | daily average | report only (mg/L) | all year |
| Beryllium, total [as Be] | daily average | report only (mg/L) | all year |
| Beryllium, total [as Be] | daily average | report only (mg/L) | all year |
| Cadmium, total [as Cd] | daily average | report only (mg/L) | all year |
| Cadmium, total [as Cd] | daily average | report only (mg/L) | all year |
| Chromium, total [as Cr] | daily average | report only (mg/L) | all year |
| Chromium, total [as Cr] | daily average | report only (mg/L) | all year |
| Copper, total [as Cu] | daily average | report only (mg/L) | all year |
| Copper, total [as Cu] | daily average | report only (mg/L) | all year |
| Lead, total [as Pb] | daily average | report only (mg/L) | all year |
| Lead, total [as Pb] | daily average | report only (mg/L) | all year |
| Thallium, total [as Tl] | daily average | report only (mg/L) | all year |
| Thallium, total [as Tl] | daily average | report only (mg/L) | all year |
| Nickel, total [as Ni] | daily average | report only (mg/L) | all year |
| Nickel, total [as Ni] | daily average | report only (mg/L) | all year |
| Silver, total [as Ag] | daily average | report only (mg/L) | all year |
| Silver, total [as Ag] | daily average | report only (mg/L) | all year |
| Zinc, total [as Zn] | daily average | report only (mg/L) | all year |
| Zinc, total [as Zn] | daily average | report only (mg/L) | all year |
| Antimony, total [as Sb] | daily average | report only (mg/L) | all year |
| Antimony, total [as Sb] | daily average | report only (mg/L) | all year |
| Selenium, total [as Se] | daily average | report only (mg/L) | all year |
| Selenium, total [as Se] | daily average | report only (mg/L) | all year |
| Phenolics, total recoverable | daily average | report only (mg/L) | all year |
| Phenolics, total recoverable | daily average | report only (mg/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| BOD, percent removal [total] | minimum value | ≥ 85 % | all year |
| E. coli | 30-day geometric mean | ≤ 126 #/100mL | all year |
| E. coli | daily maximum | ≤ 409 #/100mL | all year |
| Flow, total | total | report only (Mgal) | all year |
| Mercury, total [as Hg] | daily average | report only (mg/L) | all year |
| Mercury, total [as Hg] | daily average | report only (mg/L) | all year |
| Solids, suspended percent removal | minimum value | ≥ 85 % | all year |
| Hardness, tot calc. [Ca, Mg, Fe] as CaC03 | daily average | report only (mg/L) | all year |
| Oil and grease visual | total | report only (N=0;Y=1) | all year |
| Toxic Units Static Renewal 48Hr Acute Ceriodaphnia dubia | maximum value | < 1 tox acute | all year |
| TU Static Renewal 96Hr Acute Pimphales promelas | maximum value | < 1 tox acute | all year |
Cited limits by parameter: North Dakota's rules and the federal ones.
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