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Jefferson Davis Parish Water & Sewer Commission #1

Water Supply, Lake Arthur, Louisiana. NPDES permit LA0115592, in force until Jun 30, 2029. Last 12 months: over a limit 2 times (last December 2025), 4 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A quarterly (7 values), outfall 001 form Q quarterly (1 value), outfall 101 form S twice a year
Last report on file
June 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 5 of 18 reports late

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

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, daily maximum113 mg/L≤ 45 mg/L151%
December 2025Solids, total suspended, monthly average113 mg/L≤ 30 mg/L277%

Limits in force (14)

ParameterStatisticLimitMonthsOutfall
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Chloride [as Cl]daily maximumreport only (mg/L)all year001
Iron, total recoverabledaily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year101
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year101
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year101
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year101

How strict are these limits?

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

Same industry: the 18 Water Supply permits in Louisiana.

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Your permit document is the final word. As JSON: /api/v1/permits/LA0115592 · MCP: https://passage-data.com/mcp