Louisiana Energy & Power Authority (LEPA) - Morgan City Power Plant — NPDES permit LA0126527: limits, due date and EPA's record

Electric Services, Morgan City, Louisiana. NPDES permit LA0126527, in force until Jun 30, 2031. Last 12 months: over a limit once (last May 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
May 2026	Oil & Grease, daily maximum	28 mg/L	≤ 20 mg/L	40%

Limits in force (40)

Parameter	Statistic	Limit	Months	Outfall
Oxygen demand, chem. [high level] [COD]	monthly average	≤ 200 mg/L	all year	001
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 300 mg/L	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous maximum	≤ 8.5 SU	all year	001
Solids, total suspended	monthly average	≤ 30 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 100 mg/L	all year	001
Oil & Grease	monthly average	≤ 15 mg/L	all year	001
Oil & Grease	daily maximum	≤ 20 mg/L	all year	001
Nitrogen, total [as N]	monthly average	report only (mg/L)	all year	001
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	001
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	001
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	001
Arsenic, total [as As]	monthly average	report only (mg/L)	all year	001
Arsenic, total [as As]	daily maximum	report only (mg/L)	all year	001
Zinc, total [as Zn]	monthly average	report only (mg/L)	all year	001
Zinc, total [as Zn]	daily maximum	report only (mg/L)	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Temperature, water deg. fahrenheit	monthly average	report only (deg F)	all year	002
Temperature, water deg. fahrenheit	instantaneous maximum	report only (deg F)	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous maximum	≤ 8.5 SU	all year	002
Solids, total suspended	monthly average	≤ 30 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 100 mg/L	all year	002
Oil & Grease	monthly average	≤ 15 mg/L	all year	002
Oil & Grease	daily maximum	≤ 20 mg/L	all year	002
Nitrogen, total [as N]	monthly average	report only (mg/L)	all year	002
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	002
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	002
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	002
Chromium, total [as Cr]	monthly average	≤ .2 mg/L	all year	002
Chromium, total [as Cr]	daily maximum	≤ .2 mg/L	all year	002
Copper, total [as Cu]	monthly average	report only (mg/L)	all year	002
Copper, total [as Cu]	daily maximum	report only (mg/L)	all year	002
Zinc, total [as Zn]	monthly average	≤ .207 mg/L	all year	002
Zinc, total [as Zn]	daily maximum	≤ .49 mg/L	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Chlorine, free available	monthly average	≤ .2 mg/L	all year	002
Chlorine, free available	daily maximum	≤ .5 mg/L	all year	002

New limits from Jul 1, 2029

Parameter	New limit	New or tighter	Median, last 12 months	× new limit
Copper, total [as Cu], daily maximum	0.064 mg/L	new	0.012 mg/L (3 values)	0.188×
Copper, total [as Cu], monthly average	0.027 mg/L	new	0.012 mg/L (3 values)	0.444×

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/LA0126527 · MCP: https://passage-data.com/mcp