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Sewage treatment plant, Cooperstown, North Dakota. NPDES permit ND0023213, in force until Sep 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | daily minimum | report only (mg/L) | 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 |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | daily minimum | report only (mg/L) | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year |
| Cyanide, total [as CN] | minimum | report only (ug/L) | all year |
| Cyanide, total [as CN] | average | report only (ug/L) | all year |
| Cyanide, total [as CN] | maximum | report only (ug/L) | all year |
| Hardness, total [as CaCO3] | minimum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | average | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | maximum | report only (mg/L) | all year |
| Arsenic, total [as As] | minimum | report only (ug/L) | all year |
| Arsenic, total [as As] | average | report only (ug/L) | all year |
| Arsenic, total [as As] | maximum | report only (ug/L) | all year |
| Beryllium, total [as Be] | minimum | report only (ug/L) | all year |
| Beryllium, total [as Be] | average | report only (ug/L) | all year |
| Beryllium, total [as Be] | maximum | report only (ug/L) | all year |
| Cadmium, total [as Cd] | minimum | report only (ug/L) | all year |
| Cadmium, total [as Cd] | average | report only (ug/L) | all year |
| Cadmium, total [as Cd] | maximum | report only (ug/L) | all year |
| Chromium, total [as Cr] | minimum | report only (ug/L) | all year |
| Chromium, total [as Cr] | average | report only (ug/L) | all year |
| Chromium, total [as Cr] | maximum | report only (ug/L) | all year |
| Copper, total [as Cu] | minimum | report only (ug/L) | all year |
| Copper, total [as Cu] | average | report only (ug/L) | all year |
| Copper, total [as Cu] | maximum | report only (ug/L) | all year |
| Lead, total [as Pb] | minimum | report only (ug/L) | all year |
| Lead, total [as Pb] | average | report only (ug/L) | all year |
| Lead, total [as Pb] | maximum | report only (ug/L) | all year |
| Thallium, total [as Tl] | minimum | report only (ug/L) | all year |
| Thallium, total [as Tl] | average | report only (ug/L) | all year |
| Thallium, total [as Tl] | maximum | report only (ug/L) | all year |
| Nickel, total [as Ni] | minimum | report only (ug/L) | all year |
| Nickel, total [as Ni] | average | report only (ug/L) | all year |
| Nickel, total [as Ni] | maximum | report only (ug/L) | all year |
| Silver, total [as Ag] | minimum | report only (ug/L) | all year |
| Silver, total [as Ag] | average | report only (ug/L) | all year |
| Silver, total [as Ag] | maximum | report only (ug/L) | all year |
| Zinc, total [as Zn] | minimum | report only (ug/L) | all year |
| Zinc, total [as Zn] | average | report only (ug/L) | all year |
| Zinc, total [as Zn] | maximum | report only (ug/L) | all year |
| Antimony, total [as Sb] | minimum | report only (ug/L) | all year |
| Antimony, total [as Sb] | average | report only (ug/L) | all year |
| Antimony, total [as Sb] | maximum | report only (ug/L) | all year |
| Selenium, total [as Se] | minimum | report only (ug/L) | all year |
| Selenium, total [as Se] | average | report only (ug/L) | all year |
| Selenium, total [as Se] | maximum | report only (ug/L) | all year |
| Total phenols | minimum | report only (ug/L) | all year |
| Total phenols | average | report only (ug/L) | all year |
| Total phenols | maximum | report only (ug/L) | all year |
| Flow, total | total | report only (Mgal) | all year |
| Mercury, total [as Hg] | minimum | report only (ug/L) | all year |
| Mercury, total [as Hg] | average | report only (ug/L) | all year |
| Mercury, total [as Hg] | maximum | report only (ug/L) | all year |
| Oil and grease visual | total | report only (N=0;Y=1) | all year |
Cited limits by parameter: North Dakota's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/ND0023213 · MCP: https://passage-data.com/mcp