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Sewerage & Water Board of New

Sewage treatment plant, New Orleans, Louisiana. NPDES permit LA0000086 expired Jun 30, 2025; its limits still apply. Last 12 months: over a limit 15 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form Q quarterly (4 values), outfall 002 form A quarterly (9 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
19 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, daily maximum4.2 mg/L≤ .2 mg/L2000%
November 2025Chlorine, total residual, daily maximum4.6 mg/L≤ .2 mg/L2200%
November 2025pH, instantaneous maximum9.17 SU≤ 9 SU—
December 2025Chlorine, total residual, daily maximum4.3 mg/L≤ .2 mg/L2050%
December 2025pH, instantaneous maximum9.39 SU≤ 9 SU—
January 2026Chlorine, total residual, daily maximum3.64 mg/L≤ .2 mg/L1720%
January 2026pH, instantaneous maximum9.58 SU≤ 9 SU—
February 2026Chlorine, total residual, daily maximum4.8 mg/L≤ .2 mg/L2300%
March 2026Chlorine, total residual, daily maximum2.6 mg/L≤ .2 mg/L1200%
March 2026pH, instantaneous maximum9.18 SU≤ 9 SU—
April 2026Chlorine, total residual, daily maximum2.8 mg/L≤ .2 mg/L1300%
May 2026Chlorine, total residual, daily maximum2.8 mg/L≤ .2 mg/L1300%
May 2026pH, instantaneous maximum9.01 SU≤ 9 SU—
June 2026Chlorine, total residual, daily maximum3.3 mg/L≤ .2 mg/L1550%
June 2026pH, instantaneous maximum9.15 SU≤ 9 SU—

Limits in force (13)

ParameterStatisticLimitMonthsOutfall
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 10 SUall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year002
pHinstantaneous minimum≥ 6 SUall year002
pHinstantaneous maximum≤ 9 SUall year002
Carbon, tot organic [TOC]daily maximumreport only (mg/L)all year002
Carbon, tot organic [TOC]daily maximumreport only (mg/L)all year002
Carbon, tot organic [TOC]daily maximum≤ 5 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year002
Chlorine, total residualdaily maximum≤ .2 mg/Lall year002

How strict are these limits?

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

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/LA0000086 · MCP: https://passage-data.com/mcp