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Duke Energy Indiana, LLC - Henry Co. Generating Station

Electric Services, New Castle, Indiana. NPDES permit IN0061361, in force until Feb 29, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (21 values)
Renewal application due
Sep 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (21)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Streamflowmonthly averagereport only (MGD)all year
Streamflowdaily maximumreport only (MGD)all year
Streamflowmonthly averagereport only (MGD)all year
Streamflowdaily maximumreport only (MGD)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 100 mg/Lall year
Oil and grease, hexane extr methodmonthly average≤ 10 mg/Lall year
Oil and grease, hexane extr methoddaily maximum≤ 15 mg/Lall year
Fluoride, total [as F]monthly average≤ 4.1 mg/Lall year
Fluoride, total [as F]daily maximum≤ 8.2 mg/Lall year
Iron, total recoverablemonthly average≤ 2.4 mg/Lall year
Iron, total recoverabledaily maximum≤ 5.5 mg/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average< .06 mg/Lall year
Chlorine, total residualdaily maximum< .06 mg/Lall year
Dilution factordaily maximum≤ .333 Ratioall year
Flow, totalmonthly totalreport only (Mgal/mo)all year

How strict are these limits?

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

Same industry: the 30 Electric Services permits in Indiana.

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/IN0061361 · MCP: https://passage-data.com/mcp