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Duke Energy Carolinas LLC

Electric Services, major discharger, Gaffney, South Carolina. NPDES permit SC0049140 expired Aug 31, 2018; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: outfall 001 form 1 monthly (9 values), outfall 001 form 3 monthly (2 values), outfall 01A form 1 monthly (10 values), outfall 01B form 1 monthly (8 values), outfall 01C form 1 monthly (8 values), outfall 001 form 2 quarterly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 64 reports late

Limits in force (42)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximum≤ 95 deg FJun–Sep001
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg FJan, Feb, Mar, Apr, May, Oct, Nov, Dec001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 8.5 SUall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Lead, total [as Pb]monthly averagereport only (mg/L)all year001
Lead, total [as Pb]daily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Bromide [as Br]monthly averagereport only (mg/L)all year001
Bromide [as Br]daily maximumreport only (mg/L)all year001
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average≤ 25 %all year001
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum≤ 40 %all year001
pHinstantaneous minimumreport only (SU)all year01A
pHinstantaneous maximumreport only (SU)all year01A
Chromium, total [as Cr]monthly average≤ .2 mg/Lall year01A
Chromium, total [as Cr]daily maximum≤ .2 mg/Lall year01A
Zinc, total [as Zn]monthly average≤ 1 mg/Lall year01A
Zinc, total [as Zn]daily maximum≤ 1 mg/Lall year01A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01A
Chlorine, free availablemonthly average≤ .2 mg/Lall year01A
Chlorine, free availabledaily maximum≤ .5 mg/Lall year01A
pHinstantaneous minimumreport only (SU)all year01B
pHinstantaneous maximumreport only (SU)all year01B
Solids, total suspendedmonthly average≤ 30 mg/Lall year01B
Solids, total suspendeddaily maximum≤ 100 mg/Lall year01B
Oil & Greasemonthly average≤ 15 mg/Lall year01B
Oil & Greasedaily maximum≤ 20 mg/Lall year01B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01B
pHinstantaneous minimumreport only (SU)all year01C
pHinstantaneous maximumreport only (SU)all year01C
Solids, total suspendedmonthly average≤ 30 mg/Lall year01C
Solids, total suspendeddaily maximum≤ 100 mg/Lall year01C
Oil & Greasemonthly average≤ 15 mg/Lall year01C
Oil & Greasedaily maximum≤ 20 mg/Lall year01C
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01C
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01C

How strict are these limits?

Cited limits by parameter: South Carolina's rules and the federal ones.

Same industry: the 17 Electric Services permits in South Carolina.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/SC0049140 · MCP: https://passage-data.com/mcp