DOMINION ENERGY SOUTH CAROLINA INC

NPDES permit SC0030856 · Major NON-POTW · effective, expires 2027-08-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

0values over a limit
0required values missing, on 0 form(s)
0of 99 forms filed late

Last period with anything received: 2026-07-31.

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 (66)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX <= 113 deg F all year
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 8.5 SU all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003Solids, total suspendedMO AVG <= 30 mg/L all year
003Solids, total suspendedDAILY MX <= 100 mg/L all year
003Oil & GreaseMO AVG <= 15 mg/L all year
003Oil & GreaseDAILY MX <= 20 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
004Solids, total suspendedMO AVG <= 30 mg/L all year
004Solids, total suspendedDAILY MX <= 100 mg/L all year
004Oil & GreaseMO AVG <= 15 mg/L all year
004Oil & GreaseDAILY MX <= 20 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
005BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
005BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
005Solids, total suspendedMO AVG <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 45 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005E. coli30DAVGEO <= 126 #/100mL all year
005E. coliDAILY MX <= 349 #/100mL all year
007Solids, total suspendedMO AVG <= 30 mg/L all year
007Solids, total suspendedDAILY MX <= 100 mg/L all year
007Oil & GreaseMO AVG <= 15 mg/L all year
007Oil & GreaseDAILY MX <= 20 mg/L all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
008Solids, total suspendedMO AVG <= 30 mg/L all year
008Solids, total suspendedDAILY MX <= 100 mg/L all year
008Oil & GreaseMO AVG <= 15 mg/L all year
008Oil & GreaseDAILY MX <= 20 mg/L all year
008Copper, total [as Cu]MO AVG <= 1 mg/L all year
008Copper, total [as Cu]DAILY MX <= 1 mg/L all year
008Iron, total [as Fe]MO AVG <= 1 mg/L all year
008Iron, total [as Fe]DAILY MX <= 1 mg/L all year
008Flow, in conduit or thru treatment plantMO AVG report only all year
008Flow, in conduit or thru treatment plantDAILY MX report only all year
014pHINST MIN >= 6 SU all year
014pHINST MAX <= 8.5 SU all year
014Flow, in conduit or thru treatment plantMO AVG report only all year
014Flow, in conduit or thru treatment plantDAILY MX report only all year
014LC50 Static 48Hr Acute Ceriodaphnia dubiaDAILY MN report only all year
014%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AVG report only all year
014%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX report only all year
014IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MN report only all year
06ASolids, total suspendedMO AVG <= 30 mg/L all year
06ASolids, total suspendedDAILY MX <= 100 mg/L all year
06AOil & GreaseMO AVG <= 15 mg/L all year
06AOil & GreaseDAILY MX <= 20 mg/L all year
06AFlow, in conduit or thru treatment plantMO AVG report only all year
06AFlow, in conduit or thru treatment plantDAILY MX report only all year
06BSolids, total suspendedMO AVG <= 30 mg/L all year
06BSolids, total suspendedDAILY MX <= 98 mg/L all year
06BOil & GreaseMO AVG <= 15 mg/L all year
06BOil & GreaseDAILY MX <= 19 mg/L all year
06BFlow, in conduit or thru treatment plantMO AVG report only all year
06BFlow, in conduit or thru treatment plantDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states