INMAN MILLS — NPDES permit SC0002496: limits, due date and EPA's record

NPDES permit SC0002496 · Minor NON-POTW · administratively continued, expires 2026-05-31 · EPA's file as of 2026-09-19

This permit expired on 2026-05-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

Reporting

Reports are due about 29 days after each monitoring period ends (the most common figure among SC permits in EPA's filings — check your permit).

Limits in force (184)

Outfall	Parameter	Statistic	Limit	Months
001	Temperature, water deg. fahrenheit	DAILY MX	<= 90 deg F	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 10 mg/L	all year
001	BOD, 5-day, 20 deg. C	DAILY MX	<= 20 mg/L	all year
001	pH	INST MIN	>= 6 SU	all year
001	pH	INST MAX	<= 9 SU	all year
001	Solids, total suspended	MO AVG	<= 40 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 40 mg/L	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
002	Oxygen, dissolved [DO]	INST MIN	>= 1 mg/L	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
002	BOD, 5-day, 20 deg. C	DAILY MX	<= 60 mg/L	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 1.45 lb/d	all year
002	BOD, 5-day, 20 deg. C	DAILY MX	<= 2.9 lb/d	all year
002	pH	INST MIN	>= 6 SU	all year
002	pH	INST MAX	<= 9 SU	all year
002	Solids, total suspended	MO AVG	<= 30 mg/L	all year
002	Solids, total suspended	DAILY MX	<= 60 mg/L	all year
002	Solids, total suspended	MO AVG	<= 3.8 lb/d	all year
002	Solids, total suspended	DAILY MX	<= 7.5 lb/d	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	Chlorine, total residual	MO AVG	<= .5 mg/L	all year
002	Chlorine, total residual	DAILY MX	<= 1 mg/L	all year
002	E. coli	30DAVGEO	<= 126 #/100mL	all year
002	E. coli	DAILY MX	<= 349 #/100mL	all year
003	Temperature, water deg. centigrade	MO AVG	report only	all year
003	Temperature, water deg. centigrade	MO AVG	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	Temperature, water deg. centigrade	DAILY MX	report only	all year
003	Temperature, water deg. centigrade	DAILY MX	report only	all year
003	Oxygen, dissolved [DO]	MINIMUM	= 1 mg/L	all year
003	Oxygen, dissolved [DO]	MINIMUM	>= 1 mg/L	all year
003	Oxygen, dissolved [DO]	MINIMUM	>= 1 mg/L	all year
003	BOD, 5-day, 20 deg. C	MO AVG	= 23.4 mg/L	all year
003	BOD, 5-day, 20 deg. C	MO AVG	<= 23.4 mg/L	all year
003	BOD, 5-day, 20 deg. C	MO AVG	<= 23.4 mg/L	all year
003	BOD, 5-day, 20 deg. C	DAILY MX	= 46.8 mg/L	all year
003	BOD, 5-day, 20 deg. C	DAILY MX	<= 46.8 mg/L	all year
003	BOD, 5-day, 20 deg. C	DAILY MX	<= 46.8 mg/L	all year
003	BOD, 5-day, 20 deg. C	MO AVG	= 54.3 lb/d	all year
003	BOD, 5-day, 20 deg. C	MO AVG	<= 81.4 lb/d	all year
003	BOD, 5-day, 20 deg. C	MO AVG	<= 67.9 lb/d	all year
003	BOD, 5-day, 20 deg. C	DAILY MX	= 105.7 lb/d	all year
003	BOD, 5-day, 20 deg. C	DAILY MX	<= 158.6 lb/d	all year
003	BOD, 5-day, 20 deg. C	DAILY MX	<= 132.1 lb/d	all year
003	pH	INST MIN	= 6 SU	all year
003	pH	INST MIN	>= 6 SU	all year
003	pH	INST MIN	>= 6 SU	all year
003	pH	INST MAX	= 8.5 SU	all year
003	pH	INST MAX	<= 8.5 SU	all year
003	pH	INST MAX	<= 8.5 SU	all year
003	Solids, total suspended	MO AVG	<= 228.6 lb/d	all year
003	Solids, total suspended	MO AVG	= 182.9 lb/d	all year
003	Solids, total suspended	MO AVG	<= 274.3 lb/d	all year
003	Solids, total suspended	DAILY MX	<= 514.3 lb/d	all year
003	Solids, total suspended	DAILY MX	= 411.4 lb/d	all year
003	Solids, total suspended	DAILY MX	<= 617.1 lb/d	all year
003	Nitrogen, total [as N]	MO AVG	report only	all year
003	Nitrogen, total [as N]	MO AVG	report only	all year
003	Nitrogen, total [as N]	MO AVG	report only	all year
003	Nitrogen, total [as N]	DAILY MX	report only	all year
003	Nitrogen, total [as N]	DAILY MX	report only	all year
003	Nitrogen, total [as N]	DAILY MX	report only	all year
003	Nitrogen, total [as N]	MO AVG	report only	all year
003	Nitrogen, total [as N]	MO AVG	report only	all year
003	Nitrogen, total [as N]	MO AVG	report only	all year
003	Nitrogen, total [as N]	DAILY MX	report only	all year
003	Nitrogen, total [as N]	DAILY MX	report only	all year
003	Nitrogen, total [as N]	DAILY MX	report only	all year
003	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
003	Nitrogen, ammonia total [as N]	MO AVG	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	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
003	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
003	Nitrogen, nitrate total [as N]	MO AVG	report only	all year
003	Nitrogen, nitrate total [as N]	MO AVG	report only	all year
003	Nitrogen, nitrate total [as N]	MO AVG	report only	all year
003	Nitrogen, nitrate total [as N]	DAILY MX	report only	all year
003	Nitrogen, nitrate total [as N]	DAILY MX	report only	all year
003	Nitrogen, nitrate total [as N]	DAILY MX	report only	all year
003	Nitrogen, nitrate total [as N]	MO AVG	report only	all year
003	Nitrogen, nitrate total [as N]	MO AVG	report only	all year
003	Nitrogen, nitrate total [as N]	MO AVG	report only	all year
003	Nitrogen, nitrate total [as N]	DAILY MX	report only	all year
003	Nitrogen, nitrate total [as N]	DAILY MX	report only	all year
003	Nitrogen, nitrate total [as N]	DAILY MX	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
003	Phosphorus, total [as P]	MO AVG	report only	all year
003	Phosphorus, total [as P]	MO AVG	report only	all year
003	Phosphorus, total [as P]	MO AVG	report only	all year
003	Phosphorus, total [as P]	DAILY MX	report only	all year
003	Phosphorus, total [as P]	DAILY MX	report only	all year
003	Phosphorus, total [as P]	DAILY MX	report only	all year
003	Sulfide, total [as S]	MO AVG	report only	all year
003	Sulfide, total [as S]	MO AVG	report only	all year
003	Sulfide, total [as S]	MO AVG	report only	all year
003	Sulfide, total [as S]	DAILY MX	report only	all year
003	Sulfide, total [as S]	DAILY MX	report only	all year
003	Sulfide, total [as S]	DAILY MX	report only	all year
003	Sulfide, total [as S]	MO AVG	= 2.9 lb/d	all year
003	Sulfide, total [as S]	MO AVG	<= 3.6 lb/d	all year
003	Sulfide, total [as S]	MO AVG	<= 4.3 lb/d	all year
003	Sulfide, total [as S]	DAILY MX	= 5.7 lb/d	all year
003	Sulfide, total [as S]	DAILY MX	<= 7.1 lb/d	all year
003	Sulfide, total [as S]	DAILY MX	<= 8.6 lb/d	all year
003	Chromium, total [as Cr]	MO AVG	= 1.4 lb/d	all year
003	Chromium, total [as Cr]	MO AVG	<= 1.8 lb/d	all year
003	Chromium, total [as Cr]	MO AVG	<= 2.1 lb/d	all year
003	Chromium, total [as Cr]	DAILY MX	= 2.9 lb/d	all year
003	Chromium, total [as Cr]	DAILY MX	<= 3.6 lb/d	all year
003	Chromium, total [as Cr]	DAILY MX	<= 4.3 lb/d	all year
003	Color [admi units]	INST MAX	report only	all year
003	Color [admi units]	INST MAX	report only	all year
003	Color [admi units]	INST MAX	report only	all year
003	Color [admi units]	INST MAX	report only	all year
003	Color [admi units]	INST MAX	report only	all year
003	Color [admi units]	INST MAX	report only	all year
003	Color [admi units]	INST MAX	report only	all year
003	Color [admi units]	INST MAX	report only	all year
003	Color [admi units]	INST MAX	report only	all year
003	Color [admi units]	INST MAX	= 40 col unit	all year
003	Color [admi units]	INST MAX	<= 40 col unit	all year
003	Color [admi units]	INST MAX	<= 40 col unit	all year
003	Total phenols	MO AVG	<= 1.8 lb/d	all year
003	Total phenols	MO AVG	= 1.4 lb/d	all year
003	Total phenols	MO AVG	<= 2.1 lb/d	all year
003	Total phenols	DAILY MX	<= 3.6 lb/d	all year
003	Total phenols	DAILY MX	= 2.9 lb/d	all year
003	Total phenols	DAILY MX	<= 4.3 lb/d	all year
003	Flow, in conduit or thru treatment plant	MO AVG	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	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Hydrogen sulfide, unionized	MO AVG	= .1225 mg/L	all year
003	Hydrogen sulfide, unionized	MO AVG	<= .1225 mg/L	all year
003	Hydrogen sulfide, unionized	MO AVG	<= .1225 mg/L	all year
003	Hydrogen sulfide, unionized	DAILY MX	= .245 mg/L	all year
003	Hydrogen sulfide, unionized	DAILY MX	<= .245 mg/L	all year
003	Hydrogen sulfide, unionized	DAILY MX	<= .245 mg/L	all year
003	Chemical oxygen demand [COD]	MO AVG	= 1263 lb/d	all year
003	Chemical oxygen demand [COD]	MO AVG	<= 1579 lb/d	all year
003	Chemical oxygen demand [COD]	MO AVG	<= 1894 lb/d	all year
003	Chemical oxygen demand [COD]	DAILY MX	= 1963 lb/d	all year
003	Chemical oxygen demand [COD]	DAILY MX	<= 2454 lb/d	all year
003	Chemical oxygen demand [COD]	DAILY MX	<= 2944 lb/d	all year
003	PFAS Sum	MO AVG	report only	all year
003	PFAS Sum	MO AVG	report only	all year
003	PFAS Sum	MO AVG	report only	all year
003	PFAS Sum	DAILY MX	report only	all year
003	PFAS Sum	DAILY MX	report only	all year
003	PFAS Sum	DAILY MX	report only	all year
003	PFAS Sum	MO AVG	report only	all year
003	PFAS Sum	MO AVG	report only	all year
003	PFAS Sum	MO AVG	report only	all year
003	PFAS Sum	DAILY MX	report only	all year
003	PFAS Sum	DAILY MX	report only	all year
003	PFAS Sum	DAILY MX	report only	all year
003	PFAS Sum	MO AVG	report only	all year
003	PFAS Sum	MO AVG	report only	all year
003	PFAS Sum	MO AVG	report only	all year
003	PFAS Sum	DAILY MX	report only	all year
003	PFAS Sum	DAILY MX	report only	all year
003	PFAS Sum	DAILY MX	report only	all year
003	LC50 Static 48Hr Acute Ceriodaphnia dubia	DAILY MN	report only	all year
003	%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	MO AVG	= 25 %	all year
003	%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	DAILY MX	= 40 %	all year
003	Pass/Fail Static 48Hr Acute Ceriodaphnia dubia	DAILY MX	= 0 pass=0;fail=1	all year
003	IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia	DAILY MN	report only	all year