Casselton City Of — NPDES permit ND0020567: limits, due date and EPA's record

NPDES permit ND0020567 · Minor POTW · effective, expires 2029-09-30 · EPA's file as of 2026-09-19

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

Reporting

Reports are due about 30 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (222)

Outfall	Parameter	Statistic	Limit	Months
001	Temperature, water deg. centigrade	DAILY MN	report only	all year
001	Temperature, water deg. centigrade	MO AVG	report only	all year
001	Temperature, water deg. centigrade	WKLY AVG	report only	all year
001	Temperature, water deg. centigrade	DAILY MN	report only	all year
001	Temperature, water deg. centigrade	MO AVG	report only	all year
001	Temperature, water deg. centigrade	DAILY MX	report only	all year
001	Stream flow, instantaneous	MO AVG	report only	all year
001	Stream flow, instantaneous	DAILY MX	report only	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 25 mg/L	all year
001	BOD, 5-day, 20 deg. C	WKLY AVG	<= 45 mg/L	all year
001	pH	MINIMUM	>= 6 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	pH	MINIMUM	report only	all year
001	pH	MAXIMUM	report only	all year
001	Solids, total suspended	MO AVG	<= 30 mg/L	all year
001	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
001	Oil & Grease	DAILY MX	<= 10 mg/L	all year
001	Nitrogen, ammonia total [as N]	DAILY MN	report only	all year
001	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
001	Nitrogen, ammonia total [as N]	WKLY AVG	report only	all year
001	Cyanide, total [as CN]	DAILY MN	report only	all year
001	Cyanide, total [as CN]	DAILY AV	report only	all year
001	Cyanide, total [as CN]	DAILY MX	report only	all year
001	Hardness, total [as CaCO3]	DAILY MN	report only	all year
001	Hardness, total [as CaCO3]	DAILY AV	report only	all year
001	Hardness, total [as CaCO3]	DAILY MX	report only	all year
001	Arsenic, total [as As]	DAILY MN	report only	all year
001	Arsenic, total [as As]	DAILY AV	report only	all year
001	Arsenic, total [as As]	DAILY MX	report only	all year
001	Beryllium, total [as Be]	DAILY MN	report only	all year
001	Beryllium, total [as Be]	DAILY AV	report only	all year
001	Beryllium, total [as Be]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY MN	report only	all year
001	Cadmium, total [as Cd]	DAILY AV	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Chromium, total [as Cr]	DAILY MN	report only	all year
001	Chromium, total [as Cr]	DAILY AV	report only	all year
001	Chromium, total [as Cr]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY MN	report only	all year
001	Copper, total [as Cu]	DAILY AV	report only	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Lead, total [as Pb]	DAILY MN	report only	all year
001	Lead, total [as Pb]	DAILY AV	report only	all year
001	Lead, total [as Pb]	DAILY MX	report only	all year
001	Thallium, total [as Tl]	DAILY MN	report only	all year
001	Thallium, total [as Tl]	DAILY AV	report only	all year
001	Thallium, total [as Tl]	DAILY MX	report only	all year
001	Nickel, total [as Ni]	DAILY MN	report only	all year
001	Nickel, total [as Ni]	DAILY AV	report only	all year
001	Nickel, total [as Ni]	DAILY MX	report only	all year
001	Silver, total [as Ag]	DAILY MN	report only	all year
001	Silver, total [as Ag]	DAILY AV	report only	all year
001	Silver, total [as Ag]	DAILY MX	report only	all year
001	Zinc, total [as Zn]	DAILY MN	report only	all year
001	Zinc, total [as Zn]	DAILY AV	report only	all year
001	Zinc, total [as Zn]	DAILY MX	report only	all year
001	Antimony, total [as Sb]	DAILY MN	report only	all year
001	Antimony, total [as Sb]	DAILY AV	report only	all year
001	Antimony, total [as Sb]	DAILY MX	report only	all year
001	Selenium, total [as Se]	DAILY MN	report only	all year
001	Selenium, total [as Se]	DAILY AV	report only	all year
001	Selenium, total [as Se]	DAILY MX	report only	all year
001	Total phenols	DAILY MN	report only	all year
001	Total phenols	DAILY AV	report only	all year
001	Total phenols	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	E. coli	30DAVGEO	<= 126 #/100mL	all year
001	E. coli	DAILY MX	<= 409 #/100mL	all year
001	Mercury, total [as Hg]	DAILY MN	report only	all year
001	Mercury, total [as Hg]	DAILY AV	report only	all year
001	Mercury, total [as Hg]	DAILY MX	report only	all year
001	Flow, total	TOTAL	report only	all year
001	Oil and grease visual	TOTAL	report only	all year
002	Temperature, water deg. centigrade	DAILY MN	report only	all year
002	Temperature, water deg. centigrade	MO AVG	report only	all year
002	Temperature, water deg. centigrade	WKLY AVG	report only	all year
002	Temperature, water deg. centigrade	DAILY MN	report only	all year
002	Temperature, water deg. centigrade	MO AVG	report only	all year
002	Temperature, water deg. centigrade	DAILY MX	report only	all year
002	Stream flow, instantaneous	MO AVG	report only	all year
002	Stream flow, instantaneous	DAILY MX	report only	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 25 mg/L	all year
002	BOD, 5-day, 20 deg. C	WKLY AVG	<= 45 mg/L	all year
002	pH	MINIMUM	>= 6 SU	all year
002	pH	MAXIMUM	<= 9 SU	all year
002	pH	MINIMUM	report only	all year
002	pH	MAXIMUM	report only	all year
002	Solids, total suspended	MO AVG	<= 30 mg/L	all year
002	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
002	Oil & Grease	DAILY MX	<= 10 mg/L	all year
002	Nitrogen, ammonia total [as N]	DAILY MN	report only	all year
002	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
002	Nitrogen, ammonia total [as N]	WKLY AVG	report only	all year
002	Cyanide, total [as CN]	DAILY MN	report only	all year
002	Cyanide, total [as CN]	DAILY AV	report only	all year
002	Cyanide, total [as CN]	DAILY MX	report only	all year
002	Hardness, total [as CaCO3]	DAILY MN	report only	all year
002	Hardness, total [as CaCO3]	DAILY AV	report only	all year
002	Hardness, total [as CaCO3]	DAILY MX	report only	all year
002	Arsenic, total [as As]	DAILY MN	report only	all year
002	Arsenic, total [as As]	DAILY AV	report only	all year
002	Arsenic, total [as As]	DAILY MX	report only	all year
002	Beryllium, total [as Be]	DAILY MN	report only	all year
002	Beryllium, total [as Be]	DAILY AV	report only	all year
002	Beryllium, total [as Be]	DAILY MX	report only	all year
002	Cadmium, total [as Cd]	DAILY MN	report only	all year
002	Cadmium, total [as Cd]	DAILY AV	report only	all year
002	Cadmium, total [as Cd]	DAILY MX	report only	all year
002	Chromium, total [as Cr]	DAILY MN	report only	all year
002	Chromium, total [as Cr]	DAILY AV	report only	all year
002	Chromium, total [as Cr]	DAILY MX	report only	all year
002	Copper, total [as Cu]	DAILY MN	report only	all year
002	Copper, total [as Cu]	DAILY AV	report only	all year
002	Copper, total [as Cu]	DAILY MX	report only	all year
002	Lead, total [as Pb]	DAILY MN	report only	all year
002	Lead, total [as Pb]	DAILY AV	report only	all year
002	Lead, total [as Pb]	DAILY MX	report only	all year
002	Thallium, total [as Tl]	DAILY MN	report only	all year
002	Thallium, total [as Tl]	DAILY AV	report only	all year
002	Thallium, total [as Tl]	DAILY MX	report only	all year
002	Nickel, total [as Ni]	DAILY MN	report only	all year
002	Nickel, total [as Ni]	DAILY AV	report only	all year
002	Nickel, total [as Ni]	DAILY MX	report only	all year
002	Silver, total [as Ag]	DAILY MN	report only	all year
002	Silver, total [as Ag]	DAILY AV	report only	all year
002	Silver, total [as Ag]	DAILY MX	report only	all year
002	Zinc, total [as Zn]	DAILY MN	report only	all year
002	Zinc, total [as Zn]	DAILY AV	report only	all year
002	Zinc, total [as Zn]	DAILY MX	report only	all year
002	Antimony, total [as Sb]	DAILY MN	report only	all year
002	Antimony, total [as Sb]	DAILY AV	report only	all year
002	Antimony, total [as Sb]	DAILY MX	report only	all year
002	Selenium, total [as Se]	DAILY MN	report only	all year
002	Selenium, total [as Se]	DAILY AV	report only	all year
002	Selenium, total [as Se]	DAILY MX	report only	all year
002	Total phenols	DAILY MN	report only	all year
002	Total phenols	DAILY AV	report only	all year
002	Total phenols	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	E. coli	30DAVGEO	<= 126 #/100mL	all year
002	E. coli	DAILY MX	<= 409 #/100mL	all year
002	Mercury, total [as Hg]	DAILY MN	report only	all year
002	Mercury, total [as Hg]	DAILY AV	report only	all year
002	Mercury, total [as Hg]	DAILY MX	report only	all year
002	Flow, total	TOTAL	report only	all year
002	Oil and grease visual	TOTAL	report only	all year
003	Temperature, water deg. centigrade	DAILY MN	report only	all year
003	Temperature, water deg. centigrade	MO AVG	report only	all year
003	Temperature, water deg. centigrade	WKLY AVG	report only	all year
003	Temperature, water deg. centigrade	DAILY MN	report only	all year
003	Temperature, water deg. centigrade	MO AVG	report only	all year
003	Temperature, water deg. centigrade	DAILY MX	report only	all year
003	Stream flow, instantaneous	MO AVG	report only	all year
003	Stream flow, instantaneous	DAILY MX	report only	all year
003	BOD, 5-day, 20 deg. C	MO AVG	<= 25 mg/L	all year
003	BOD, 5-day, 20 deg. C	WKLY AVG	<= 45 mg/L	all year
003	pH	MINIMUM	>= 6 SU	all year
003	pH	MAXIMUM	<= 9 SU	all year
003	pH	MINIMUM	report only	all year
003	pH	MAXIMUM	report only	all year
003	Solids, total suspended	MO AVG	<= 30 mg/L	all year
003	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
003	Oil & Grease	DAILY MX	<= 10 mg/L	all year
003	Nitrogen, ammonia total [as N]	DAILY MN	report only	all year
003	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
003	Nitrogen, ammonia total [as N]	WKLY AVG	report only	all year
003	Cyanide, total [as CN]	DAILY MN	report only	all year
003	Cyanide, total [as CN]	DAILY AV	report only	all year
003	Cyanide, total [as CN]	DAILY MX	report only	all year
003	Hardness, total [as CaCO3]	DAILY MN	report only	all year
003	Hardness, total [as CaCO3]	DAILY AV	report only	all year
003	Hardness, total [as CaCO3]	DAILY MX	report only	all year
003	Arsenic, total [as As]	DAILY MN	report only	all year
003	Arsenic, total [as As]	DAILY AV	report only	all year
003	Arsenic, total [as As]	DAILY MX	report only	all year
003	Beryllium, total [as Be]	DAILY MN	report only	all year
003	Beryllium, total [as Be]	DAILY AV	report only	all year
003	Beryllium, total [as Be]	DAILY MX	report only	all year
003	Cadmium, total [as Cd]	DAILY MN	report only	all year
003	Cadmium, total [as Cd]	DAILY AV	report only	all year
003	Cadmium, total [as Cd]	DAILY MX	report only	all year
003	Chromium, total [as Cr]	DAILY MN	report only	all year
003	Chromium, total [as Cr]	DAILY AV	report only	all year
003	Chromium, total [as Cr]	DAILY MX	report only	all year
003	Copper, total [as Cu]	DAILY MN	report only	all year
003	Copper, total [as Cu]	DAILY AV	report only	all year
003	Copper, total [as Cu]	DAILY MX	report only	all year
003	Lead, total [as Pb]	DAILY MN	report only	all year
003	Lead, total [as Pb]	DAILY AV	report only	all year
003	Lead, total [as Pb]	DAILY MX	report only	all year
003	Thallium, total [as Tl]	DAILY MN	report only	all year
003	Thallium, total [as Tl]	DAILY AV	report only	all year
003	Thallium, total [as Tl]	DAILY MX	report only	all year
003	Nickel, total [as Ni]	DAILY MN	report only	all year
003	Nickel, total [as Ni]	DAILY AV	report only	all year
003	Nickel, total [as Ni]	DAILY MX	report only	all year
003	Silver, total [as Ag]	DAILY MN	report only	all year
003	Silver, total [as Ag]	DAILY AV	report only	all year
003	Silver, total [as Ag]	DAILY MX	report only	all year
003	Zinc, total [as Zn]	DAILY MN	report only	all year
003	Zinc, total [as Zn]	DAILY AV	report only	all year
003	Zinc, total [as Zn]	DAILY MX	report only	all year
003	Antimony, total [as Sb]	DAILY MN	report only	all year
003	Antimony, total [as Sb]	DAILY AV	report only	all year
003	Antimony, total [as Sb]	DAILY MX	report only	all year
003	Selenium, total [as Se]	DAILY MN	report only	all year
003	Selenium, total [as Se]	DAILY AV	report only	all year
003	Selenium, total [as Se]	DAILY MX	report only	all year
003	Total phenols	DAILY MN	report only	all year
003	Total phenols	DAILY AV	report only	all year
003	Total phenols	DAILY MX	report only	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	E. coli	30DAVGEO	<= 126 #/100mL	all year
003	E. coli	DAILY MX	<= 409 #/100mL	all year
003	Mercury, total [as Hg]	DAILY MN	report only	all year
003	Mercury, total [as Hg]	DAILY AV	report only	all year
003	Mercury, total [as Hg]	DAILY MX	report only	all year
003	Flow, total	TOTAL	report only	all year
003	Oil and grease visual	TOTAL	report only	all year