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Water Supply, Bismarck, North Dakota. NPDES permit ND0026301, in force until Dec 31, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Conductivity | daily minimum | report only (umho/cm) | all year |
| Conductivity | quarterly average | report only (umho/cm) | all year |
| Conductivity | daily maximum | report only (umho/cm) | all year |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year |
| Oxygen, dissolved [DO] | quarterly average | report only (mg/L) | all year |
| Oxygen, dissolved [DO] | daily maximum | report only (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 | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Alkalinity, total [as CaCO3] | minimum | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | average | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | maximum | report only (mg/L) | all year |
| Bicarbonate ion- [as HCO3] | minimum | report only (mg/L) | all year |
| Bicarbonate ion- [as HCO3] | average | report only (mg/L) | all year |
| Bicarbonate ion- [as HCO3] | maximum | report only (mg/L) | all year |
| Carbonate ion- [as CO3] | minimum | report only (mg/L) | all year |
| Carbonate ion- [as CO3] | average | report only (mg/L) | all year |
| Carbonate ion- [as CO3] | maximum | report only (mg/L) | all year |
| Solids, total suspended | daily minimum | report only (mg/L) | all year |
| Solids, total suspended | quarterly average | report only (mg/L) | all year |
| Solids, total suspended | daily maximum | ≤ 90 mg/L | all year |
| Nitrogen, total [as N] | daily minimum | report only (mg/L) | all year |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | minimum | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | average | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily minimum | report only (mg/L) | all year |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/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 |
| 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 |
| Calcium, total [as Ca] | minimum | report only (mg/L) | all year |
| Calcium, total [as Ca] | average | report only (mg/L) | all year |
| Calcium, total [as Ca] | maximum | report only (mg/L) | all year |
| Magnesium, total [as Mg] | minimum | report only (mg/L) | all year |
| Magnesium, total [as Mg] | average | report only (mg/L) | all year |
| Magnesium, total [as Mg] | maximum | report only (mg/L) | all year |
| Sodium, total [as Na] | minimum | report only (mg/L) | all year |
| Sodium, total [as Na] | average | report only (mg/L) | all year |
| Sodium, total [as Na] | maximum | report only (mg/L) | all year |
| Sodium adsorption ratio | minimum | report only (Ratio) | all year |
| Sodium adsorption ratio | average | report only (Ratio) | all year |
| Sodium adsorption ratio | maximum | report only (Ratio) | all year |
| Sodium, % | daily minimum | report only (%) | all year |
| Sodium, % | quarterly average | report only (%) | all year |
| Sodium, % | daily maximum | report only (%) | all year |
| Potassium, total [as K] | minimum | report only (mg/L) | all year |
| Potassium, total [as K] | average | report only (mg/L) | all year |
| Potassium, total [as K] | maximum | report only (mg/L) | all year |
| Chloride [as Cl] | daily minimum | report only (mg/L) | all year |
| Chloride [as Cl] | quarterly average | report only (mg/L) | all year |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year |
| Fluoride, total [as F] | minimum | report only (mg/L) | all year |
| Fluoride, total [as F] | average | report only (mg/L) | all year |
| Fluoride, total [as F] | maximum | report only (mg/L) | all year |
| Silica, total [as SiO2] | minimum | report only (mg/L) | all year |
| Silica, total [as SiO2] | average | report only (mg/L) | all year |
| Silica, total [as SiO2] | 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 |
| 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 |
| 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 |
| Iron, total [as Fe] | daily minimum | report only (mg/L) | all year |
| Iron, total [as Fe] | monthly average | ≤ 1 mg/L | all year |
| Iron, total [as Fe] | daily maximum | ≤ 1.5 mg/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 |
| Manganese, total [as Mn] | daily minimum | report only (mg/L) | all year |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year |
| Manganese, total [as Mn] | daily maximum | ≤ 1.5 mg/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 |
| 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 |
| Aluminum, total [as Al] | daily minimum | report only (ug/L) | all year |
| Aluminum, total [as Al] | quarterly average | report only (ug/L) | all year |
| Aluminum, total [as Al] | daily 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 |
| 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 |
| Chlorine, total residual | daily minimum | report only (mg/L) | all year |
| Chlorine, total residual | monthly average | report only (mg/L) | all year |
| Chlorine, total residual | daily maximum | ≤ 2.7 mg/L | all year |
| E. coli | monthly geometric mean | report only (#/100mL) | all year |
| E. coli | daily maximum | report only (#/100mL) | all year |
| Hydroxide | minimum | report only (mg/L) | all year |
| Hydroxide | average | report only (mg/L) | all year |
| Hydroxide | maximum | report only (mg/L) | all year |
| Sulfates, total [as SO4] | daily minimum | report only (mg/L) | all year |
| Sulfates, total [as SO4] | quarterly average | report only (mg/L) | all year |
| Sulfates, total [as SO4] | daily maximum | report only (mg/L) | all year |
| Solids, total dissolved [TDS] | minimum | report only (mg/L) | all year |
| Solids, total dissolved [TDS] | average | report only (mg/L) | all year |
| Solids, total dissolved [TDS] | maximum | report only (mg/L) | all year |
| Duration of discharge | quarterly total | report only (d) | all year |
| Turbidity, lab, NTU | minimum | report only (NTU) | all year |
| Turbidity, lab, NTU | average | report only (NTU) | all year |
| Turbidity, lab, NTU | maximum | report only (NTU) | all year |
| Flow, total | quarterly total | report only (Mgal/qtr) | all year |
Cited limits by parameter: North Dakota's rules and the federal ones.
Same industry: the 8 Water Supply permits in North Dakota.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/ND0026301 · MCP: https://passage-data.com/mcp