Rugby City Of — NPDES permit ND0022926: limits, due date and EPA's record

NPDES permit ND0022926 · Minor POTW · effective, expires 2030-03-31 · EPA's file as of 2026-09-19

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

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among ND permits in EPA's filings — check your permit).

Limits in force (128)

Outfall	Parameter	Statistic	Limit	Months
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	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]	MINIMUM	report only	all year
002	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
002	Cyanide, total [as CN]	MINIMUM	report only	all year
002	Cyanide, total [as CN]	AVERAGE	report only	all year
002	Cyanide, total [as CN]	MAXIMUM	report only	all year
002	Hardness, total [as CaCO3]	MINIMUM	report only	all year
002	Hardness, total [as CaCO3]	AVERAGE	report only	all year
002	Hardness, total [as CaCO3]	MAXIMUM	report only	all year
002	Arsenic, total [as As]	MINIMUM	report only	all year
002	Arsenic, total [as As]	AVERAGE	report only	all year
002	Arsenic, total [as As]	MAXIMUM	report only	all year
002	Beryllium, total [as Be]	MINIMUM	report only	all year
002	Beryllium, total [as Be]	AVERAGE	report only	all year
002	Beryllium, total [as Be]	MAXIMUM	report only	all year
002	Cadmium, total [as Cd]	MINIMUM	report only	all year
002	Cadmium, total [as Cd]	AVERAGE	report only	all year
002	Cadmium, total [as Cd]	MAXIMUM	report only	all year
002	Chromium, total [as Cr]	MINIMUM	report only	all year
002	Chromium, total [as Cr]	AVERAGE	report only	all year
002	Chromium, total [as Cr]	MAXIMUM	report only	all year
002	Copper, total [as Cu]	MINIMUM	report only	all year
002	Copper, total [as Cu]	AVERAGE	report only	all year
002	Copper, total [as Cu]	MAXIMUM	report only	all year
002	Lead, total [as Pb]	MINIMUM	report only	all year
002	Lead, total [as Pb]	AVERAGE	report only	all year
002	Lead, total [as Pb]	MAXIMUM	report only	all year
002	Thallium, total [as Tl]	MINIMUM	report only	all year
002	Thallium, total [as Tl]	AVERAGE	report only	all year
002	Thallium, total [as Tl]	MAXIMUM	report only	all year
002	Nickel, total [as Ni]	MINIMUM	report only	all year
002	Nickel, total [as Ni]	AVERAGE	report only	all year
002	Nickel, total [as Ni]	MAXIMUM	report only	all year
002	Silver, total [as Ag]	MINIMUM	report only	all year
002	Silver, total [as Ag]	AVERAGE	report only	all year
002	Silver, total [as Ag]	MAXIMUM	report only	all year
002	Zinc, total [as Zn]	MINIMUM	report only	all year
002	Zinc, total [as Zn]	AVERAGE	report only	all year
002	Zinc, total [as Zn]	MAXIMUM	report only	all year
002	Antimony, total [as Sb]	MINIMUM	report only	all year
002	Antimony, total [as Sb]	AVERAGE	report only	all year
002	Antimony, total [as Sb]	MAXIMUM	report only	all year
002	Selenium, total [as Se]	MINIMUM	report only	all year
002	Selenium, total [as Se]	AVERAGE	report only	all year
002	Selenium, total [as Se]	MAXIMUM	report only	all year
002	Total phenols	MINIMUM	report only	all year
002	Total phenols	AVERAGE	report only	all year
002	Total phenols	MAXIMUM	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	MOAV GEO	<= 126 #/100mL	all year
002	E. coli	DAILY MX	<= 409 #/100mL	all year
002	Flow, total	TOTAL	report only	all year
002	Mercury, total [as Hg]	MINIMUM	report only	all year
002	Mercury, total [as Hg]	AVERAGE	report only	all year
002	Mercury, total [as Hg]	MAXIMUM	report only	all year
002	Oil and grease visual	TOTAL	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	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]	MINIMUM	report only	all year
003	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
003	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
003	Cyanide, total [as CN]	MINIMUM	report only	all year
003	Cyanide, total [as CN]	AVERAGE	report only	all year
003	Cyanide, total [as CN]	MAXIMUM	report only	all year
003	Hardness, total [as CaCO3]	MINIMUM	report only	all year
003	Hardness, total [as CaCO3]	AVERAGE	report only	all year
003	Hardness, total [as CaCO3]	MAXIMUM	report only	all year
003	Arsenic, total [as As]	MINIMUM	report only	all year
003	Arsenic, total [as As]	AVERAGE	report only	all year
003	Arsenic, total [as As]	MAXIMUM	report only	all year
003	Beryllium, total [as Be]	MINIMUM	report only	all year
003	Beryllium, total [as Be]	AVERAGE	report only	all year
003	Beryllium, total [as Be]	MAXIMUM	report only	all year
003	Cadmium, total [as Cd]	MINIMUM	report only	all year
003	Cadmium, total [as Cd]	AVERAGE	report only	all year
003	Cadmium, total [as Cd]	MAXIMUM	report only	all year
003	Chromium, total [as Cr]	MINIMUM	report only	all year
003	Chromium, total [as Cr]	AVERAGE	report only	all year
003	Chromium, total [as Cr]	MAXIMUM	report only	all year
003	Copper, total [as Cu]	MINIMUM	report only	all year
003	Copper, total [as Cu]	AVERAGE	report only	all year
003	Copper, total [as Cu]	MAXIMUM	report only	all year
003	Lead, total [as Pb]	MINIMUM	report only	all year
003	Lead, total [as Pb]	AVERAGE	report only	all year
003	Lead, total [as Pb]	MAXIMUM	report only	all year
003	Thallium, total [as Tl]	MINIMUM	report only	all year
003	Thallium, total [as Tl]	AVERAGE	report only	all year
003	Thallium, total [as Tl]	MAXIMUM	report only	all year
003	Nickel, total [as Ni]	MINIMUM	report only	all year
003	Nickel, total [as Ni]	AVERAGE	report only	all year
003	Nickel, total [as Ni]	MAXIMUM	report only	all year
003	Silver, total [as Ag]	MINIMUM	report only	all year
003	Silver, total [as Ag]	AVERAGE	report only	all year
003	Silver, total [as Ag]	MAXIMUM	report only	all year
003	Zinc, total [as Zn]	MINIMUM	report only	all year
003	Zinc, total [as Zn]	AVERAGE	report only	all year
003	Zinc, total [as Zn]	MAXIMUM	report only	all year
003	Antimony, total [as Sb]	MINIMUM	report only	all year
003	Antimony, total [as Sb]	AVERAGE	report only	all year
003	Antimony, total [as Sb]	MAXIMUM	report only	all year
003	Selenium, total [as Se]	MINIMUM	report only	all year
003	Selenium, total [as Se]	AVERAGE	report only	all year
003	Selenium, total [as Se]	MAXIMUM	report only	all year
003	Total phenols	MINIMUM	report only	all year
003	Total phenols	AVERAGE	report only	all year
003	Total phenols	MAXIMUM	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	MOAV GEO	<= 126 #/100mL	all year
003	E. coli	DAILY MX	<= 409 #/100mL	all year
003	Flow, total	TOTAL	report only	all year
003	Mercury, total [as Hg]	MINIMUM	report only	all year
003	Mercury, total [as Hg]	AVERAGE	report only	all year
003	Mercury, total [as Hg]	MAXIMUM	report only	all year
003	Oil and grease visual	TOTAL	report only	all year