Valley City Membrane WTP — NPDES permit ND0026395: limits, due date and EPA's record

NPDES permit ND0026395 · Minor NON-POTW · effective, expires 2031-06-30 · EPA's file as of 2026-09-19

EPA's record, 2025-09-01 to 2026-08-31

Last period with anything received: 2026-06-30. Most often over: Solids, total suspended (2).

Reporting

Reports are due about 31 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (214)

Outfall	Parameter	Statistic	Limit	Months
001	Stream flow, instantaneous	QRTR AVG	report only	all year
001	Stream flow, instantaneous	DAILY MX	report only	all year
001	Conductivity	DAILY MN	report only	all year
001	Conductivity	QRTR AVG	report only	all year
001	Conductivity	DAILY MX	report only	all year
001	Conductivity	DAILY MN	report only	all year
001	Conductivity	QRTR AVG	report only	all year
001	Conductivity	DAILY MX	report only	all year
001	pH	MINIMUM	>= 6.5 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	Alkalinity, total [as CaCO3]	DAILY MN	report only (alert)	all year
001	Alkalinity, total [as CaCO3]	ANNL AVG	report only (alert)	all year
001	Alkalinity, total [as CaCO3]	DAILY MX	report only (alert)	all year
001	Bicarbonate ion- [as HCO3]	DAILY MN	report only (alert)	all year
001	Bicarbonate ion- [as HCO3]	ANNL AVG	report only (alert)	all year
001	Bicarbonate ion- [as HCO3]	DAILY MX	report only (alert)	all year
001	Carbonate ion- [as CO3]	DAILY MN	report only (alert)	all year
001	Carbonate ion- [as CO3]	ANNL AVG	report only (alert)	all year
001	Carbonate ion- [as CO3]	DAILY MX	report only (alert)	all year
001	Solids, total suspended	DAILY MN	report only	all year
001	Solids, total suspended	QRTR AVG	report only	all year
001	Solids, total suspended	DAILY MX	<= 90 mg/L	all year
001	Nitrite + Nitrate total [as N]	DAILY MN	report only (alert)	all year
001	Nitrite + Nitrate total [as N]	ANNL AVG	report only (alert)	all year
001	Nitrite + Nitrate total [as N]	DAILY MX	report only (alert)	all year
001	Phosphorus, total [as P]	DAILY MN	report only (alert)	all year
001	Phosphorus, total [as P]	ANNL AVG	report only (alert)	all year
001	Phosphorus, total [as P]	DAILY MX	report only (alert)	all year
001	Hardness, total [as CaCO3]	DAILY MN	report only	all year
001	Hardness, total [as CaCO3]	ANNL AVG	report only	all year
001	Hardness, total [as CaCO3]	DAILY MX	report only	all year
001	Hardness, total [as CaCO3]	DAILY MN	report only	all year
001	Hardness, total [as CaCO3]	QRTR AVG	report only	all year
001	Hardness, total [as CaCO3]	DAILY MX	report only	all year
001	Calcium, total [as Ca]	DAILY MN	report only (alert)	all year
001	Calcium, total [as Ca]	ANNL AVG	report only (alert)	all year
001	Calcium, total [as Ca]	DAILY MX	report only (alert)	all year
001	Magnesium, total [as Mg]	DAILY MN	report only (alert)	all year
001	Magnesium, total [as Mg]	ANNL AVG	report only (alert)	all year
001	Magnesium, total [as Mg]	DAILY MX	report only (alert)	all year
001	Sodium, total [as Na]	DAILY MN	report only (alert)	all year
001	Sodium, total [as Na]	ANNL AVG	report only (alert)	all year
001	Sodium, total [as Na]	DAILY MX	report only (alert)	all year
001	Sodium adsorption ratio	DAILY MN	report only (alert)	all year
001	Sodium adsorption ratio	ANNL AVG	report only (alert)	all year
001	Sodium adsorption ratio	DAILY MX	report only (alert)	all year
001	Sodium, %	DAILY MN	report only (alert)	all year
001	Sodium, %	ANNL AVG	report only (alert)	all year
001	Sodium, %	DAILY MX	report only (alert)	all year
001	Potassium, total [as K]	DAILY MN	report only (alert)	all year
001	Potassium, total [as K]	ANNL AVG	report only (alert)	all year
001	Potassium, total [as K]	DAILY MX	report only (alert)	all year
001	Chloride [as Cl]	DAILY MN	report only (alert)	all year
001	Chloride [as Cl]	ANNL AVG	report only (alert)	all year
001	Chloride [as Cl]	DAILY MX	report only (alert)	all year
001	Sulfate, total [as SO4]	DAILY MN	report only	all year
001	Sulfate, total [as SO4]	QRTR AVG	report only	all year
001	Sulfate, total [as SO4]	DAILY MX	report only	all year
001	Sulfate, total [as SO4]	DAILY MN	report only	all year
001	Sulfate, total [as SO4]	QRTR AVG	report only	all year
001	Sulfate, total [as SO4]	DAILY MX	report only	all year
001	Fluoride, total [as F]	DAILY MN	report only (alert)	all year
001	Fluoride, total [as F]	ANNL AVG	report only (alert)	all year
001	Fluoride, total [as F]	DAILY MX	report only (alert)	all year
001	Silica, total [as SiO2]	DAILY MN	report only (alert)	all year
001	Silica, total [as SiO2]	ANNL AVG	report only (alert)	all year
001	Silica, total [as SiO2]	DAILY MX	report only (alert)	all year
001	Arsenic, total [as As]	DAILY MN	report only	all year
001	Arsenic, total [as As]	QRTR AVG	report only	all year
001	Arsenic, total [as As]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY MN	report only	all year
001	Cadmium, total [as Cd]	QRTR AVG	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY MN	report only	all year
001	Copper, total [as Cu]	QRTR AVG	report only	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Iron, total [as Fe]	DAILY MN	report only (alert)	all year
001	Iron, total [as Fe]	ANNL AVG	report only (alert)	all year
001	Iron, total [as Fe]	DAILY MX	report only (alert)	all year
001	Lead, total [as Pb]	DAILY MN	report only	all year
001	Lead, total [as Pb]	QRTR AVG	report only	all year
001	Lead, total [as Pb]	DAILY MX	report only	all year
001	Manganese, total [as Mn]	DAILY MN	report only (alert)	all year
001	Manganese, total [as Mn]	ANNL AVG	report only (alert)	all year
001	Manganese, total [as Mn]	DAILY MX	report only (alert)	all year
001	Nickel, total [as Ni]	DAILY MN	report only	all year
001	Nickel, total [as Ni]	QRTR AVG	report only	all year
001	Nickel, total [as Ni]	DAILY MX	report only	all year
001	Zinc, total [as Zn]	DAILY MN	report only	all year
001	Zinc, total [as Zn]	QRTR AVG	report only	all year
001	Zinc, total [as Zn]	DAILY MX	report only	all year
001	Selenium, total [as Se]	DAILY MN	report only	all year
001	Selenium, total [as Se]	QRTR AVG	report only	all year
001	Selenium, total [as Se]	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	QRTR AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Hydroxide	DAILY MN	report only (alert)	all year
001	Hydroxide	ANNL AVG	report only (alert)	all year
001	Hydroxide	DAILY MX	report only (alert)	all year
001	Solids, total dissolved [TDS]	DAILY MN	report only	all year
001	Solids, total dissolved [TDS]	ANNL AVG	report only	all year
001	Solids, total dissolved [TDS]	DAILY MX	report only	all year
001	Duration of discharge	TOTAL	report only	all year
001	Turbidity, lab, NTU	DAILY MN	report only (alert)	all year
001	Turbidity, lab, NTU	ANNL AVG	report only (alert)	all year
001	Turbidity, lab, NTU	DAILY MX	report only (alert)	all year
001	Flow, total	QT	report only	all year
002	Stream flow, instantaneous	QRTR AVG	report only	all year
002	Stream flow, instantaneous	DAILY MX	report only	all year
002	Conductivity	DAILY MN	report only	all year
002	Conductivity	QRTR AVG	report only	all year
002	Conductivity	DAILY MX	report only	all year
002	Conductivity	DAILY MN	report only	all year
002	Conductivity	QRTR AVG	report only	all year
002	Conductivity	DAILY MX	report only	all year
002	pH	MINIMUM	>= 6.5 SU	all year
002	pH	MAXIMUM	<= 9 SU	all year
002	Alkalinity, total [as CaCO3]	DAILY MN	report only (alert)	all year
002	Alkalinity, total [as CaCO3]	QRTR AVG	report only (alert)	all year
002	Alkalinity, total [as CaCO3]	DAILY MX	report only (alert)	all year
002	Bicarbonate ion- [as HCO3]	DAILY MN	report only (alert)	all year
002	Bicarbonate ion- [as HCO3]	QRTR AVG	report only (alert)	all year
002	Bicarbonate ion- [as HCO3]	DAILY MX	report only (alert)	all year
002	Carbonate ion- [as CO3]	DAILY MN	report only (alert)	all year
002	Carbonate ion- [as CO3]	QRTR AVG	report only (alert)	all year
002	Carbonate ion- [as CO3]	DAILY MX	report only (alert)	all year
002	Solids, total suspended	DAILY MN	report only	all year
002	Solids, total suspended	QRTR AVG	report only	all year
002	Solids, total suspended	DAILY MX	<= 90 mg/L	all year
002	Nitrite + Nitrate total [as N]	DAILY MN	report only (alert)	all year
002	Nitrite + Nitrate total [as N]	QRTR AVG	report only (alert)	all year
002	Nitrite + Nitrate total [as N]	DAILY MX	report only (alert)	all year
002	Phosphorus, total [as P]	DAILY MN	report only (alert)	all year
002	Phosphorus, total [as P]	QRTR AVG	report only (alert)	all year
002	Phosphorus, total [as P]	DAILY MX	report only (alert)	all year
002	Hardness, total [as CaCO3]	DAILY MN	report only	all year
002	Hardness, total [as CaCO3]	QRTR AVG	report only	all year
002	Hardness, total [as CaCO3]	DAILY MX	report only	all year
002	Hardness, total [as CaCO3]	DAILY MN	report only	all year
002	Hardness, total [as CaCO3]	QRTR AVG	report only	all year
002	Hardness, total [as CaCO3]	DAILY MX	report only	all year
002	Calcium, total [as Ca]	DAILY MN	report only (alert)	all year
002	Calcium, total [as Ca]	QRTR AVG	report only (alert)	all year
002	Calcium, total [as Ca]	DAILY MX	report only (alert)	all year
002	Magnesium, total [as Mg]	DAILY MN	report only (alert)	all year
002	Magnesium, total [as Mg]	QRTR AVG	report only (alert)	all year
002	Magnesium, total [as Mg]	DAILY MX	report only (alert)	all year
002	Sodium, total [as Na]	DAILY MN	report only (alert)	all year
002	Sodium, total [as Na]	QRTR AVG	report only (alert)	all year
002	Sodium, total [as Na]	DAILY MX	report only (alert)	all year
002	Sodium adsorption ratio	DAILY MN	report only (alert)	all year
002	Sodium adsorption ratio	QRTR AVG	report only (alert)	all year
002	Sodium adsorption ratio	DAILY MX	report only (alert)	all year
002	Sodium, %	DAILY MN	report only (alert)	all year
002	Sodium, %	QRTR AVG	report only (alert)	all year
002	Sodium, %	DAILY MX	report only (alert)	all year
002	Potassium, total [as K]	DAILY MN	report only (alert)	all year
002	Potassium, total [as K]	QRTR AVG	report only (alert)	all year
002	Potassium, total [as K]	DAILY MX	report only (alert)	all year
002	Chloride [as Cl]	DAILY MN	report only (alert)	all year
002	Chloride [as Cl]	QRTR AVG	report only (alert)	all year
002	Chloride [as Cl]	DAILY MX	report only (alert)	all year
002	Sulfate, total [as SO4]	DAILY MN	report only	all year
002	Sulfate, total [as SO4]	QRTR AVG	report only	all year
002	Sulfate, total [as SO4]	DAILY MX	report only	all year
002	Sulfate, total [as SO4]	DAILY MN	report only	all year
002	Sulfate, total [as SO4]	QRTR AVG	report only	all year
002	Sulfate, total [as SO4]	DAILY MX	report only	all year
002	Fluoride, total [as F]	DAILY MN	report only (alert)	all year
002	Fluoride, total [as F]	QRTR AVG	report only (alert)	all year
002	Fluoride, total [as F]	DAILY MX	report only (alert)	all year
002	Silica, total [as SiO2]	DAILY MN	report only (alert)	all year
002	Silica, total [as SiO2]	QRTR AVG	report only (alert)	all year
002	Silica, total [as SiO2]	DAILY MX	report only (alert)	all year
002	Arsenic, total [as As]	DAILY MN	report only	all year
002	Arsenic, total [as As]	QRTR AVG	report only	all year
002	Arsenic, total [as As]	DAILY MX	report only	all year
002	Cadmium, total [as Cd]	DAILY MN	report only	all year
002	Cadmium, total [as Cd]	QRTR AVG	report only	all year
002	Cadmium, total [as Cd]	DAILY MX	report only	all year
002	Copper, total [as Cu]	DAILY MN	report only	all year
002	Copper, total [as Cu]	QRTR AVG	report only	all year
002	Copper, total [as Cu]	DAILY MX	report only	all year
002	Iron, total [as Fe]	DAILY MN	report only (alert)	all year
002	Iron, total [as Fe]	QRTR AVG	report only (alert)	all year
002	Iron, total [as Fe]	DAILY MX	report only (alert)	all year
002	Lead, total [as Pb]	DAILY MN	report only	all year
002	Lead, total [as Pb]	QRTR AVG	report only	all year
002	Lead, total [as Pb]	DAILY MX	report only	all year
002	Manganese, total [as Mn]	DAILY MN	report only (alert)	all year
002	Manganese, total [as Mn]	QRTR AVG	report only (alert)	all year
002	Manganese, total [as Mn]	DAILY MX	report only (alert)	all year
002	Nickel, total [as Ni]	DAILY MN	report only	all year
002	Nickel, total [as Ni]	QRTR AVG	report only	all year
002	Nickel, total [as Ni]	DAILY MX	report only	all year
002	Zinc, total [as Zn]	DAILY MN	report only	all year
002	Zinc, total [as Zn]	QRTR AVG	report only	all year
002	Zinc, total [as Zn]	DAILY MX	report only	all year
002	Selenium, total [as Se]	DAILY MN	report only	all year
002	Selenium, total [as Se]	QRTR AVG	report only	all year
002	Selenium, total [as Se]	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	QRTR AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Hydroxide	DAILY MN	report only (alert)	all year
002	Hydroxide	QRTR AVG	report only (alert)	all year
002	Hydroxide	DAILY MX	report only (alert)	all year
002	Solids, total dissolved [TDS]	DAILY MN	report only	all year
002	Solids, total dissolved [TDS]	QRTR AVG	report only	all year
002	Solids, total dissolved [TDS]	DAILY MX	report only	all year
002	Duration of discharge	TOTAL	report only	all year
002	Turbidity, lab, NTU	DAILY MN	report only (alert)	all year
002	Turbidity, lab, NTU	QRTR AVG	report only (alert)	all year
002	Turbidity, lab, NTU	DAILY MX	report only (alert)	all year
002	Flow, total	QT	report only	all year