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Duke Energy Carolinas LLC

Electric Services, major discharger, Huntersville, North Carolina. NPDES permit NC0024392, in force until Sep 30, 2028. Last 12 months: over a limit once (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: outfall 001 form M monthly (3 values), outfall 002 form M monthly (4 values), outfall 004 form M monthly (1 value), outfall 005 form M monthly (1 value)
Renewal application due
Apr 3, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 7 required values missing, 0 of 48 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
August 2026Temperature, water deg. fahrenheit, 30-day average99.319 deg F≤ 99 deg F0%

Limits in force (11)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheit30-day average≤ 99 deg FJul–Sep001
Temperature, water deg. fahrenheit30-day average≤ 95 deg FJan, Feb, Mar, Nov, Dec001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, free available30-day average≤ .2 mg/Lall year001
Chlorine, free availabledaily maximum≤ .5 mg/Lall year001
pHdaily minimum≥ 6 SUall year002
pHdaily maximum≤ 9 SUall year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Chlorine, total residualdaily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005

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

Same industry: the 20 Electric Services permits in North Carolina.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NC0024392 · MCP: https://passage-data.com/mcp