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Duke Energy Carolinas LLC

Electric Services, major discharger, Belmont, North Carolina. NPDES permit NC0004979, in force until Dec 31, 2029. Last 12 months: no values over a limit, 10 required values missing, 1 of 26 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 33 days after each period: form M monthly (12 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 34 required values missing, 0 of 72 reports late

Limits in force (13)

ParameterStatisticLimitMonths
Turbiditydaily maximumreport only (NTU)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 50 mg/Lall year
Oil & Grease30-day average≤ 15 mg/Lall year
Oil & Greasedaily maximum≤ 20 mg/Lall year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantdaily maximum≤ 3 MGDall year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximumreport only (pass=0;fail=1)all year

How strict are these limits?

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/NC0004979 · MCP: https://passage-data.com/mcp