Passage Data · Check a report · Use it from your AI

Oil City Town of - WWTP

Sewage treatment plant, Oil City, Louisiana. NPDES permit LA0020508, in force until Jul 31, 2031. Last 12 months: over a limit 15 times (last June 2026), 6 required values missing, 3 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly, form Q quarterly, form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
38 values over a limit, 0 required values missing, 3 of 16 reports late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
October 2025Solids, total suspended, monthly average17.8 mg/L≤ 15 mg/L19%
November 2025BOD, 5-day, 20 deg. C, monthly average19.8 mg/L≤ 10 mg/L98%
November 2025BOD, 5-day, 20 deg. C, weekly average22.2 mg/L≤ 15 mg/L48%
November 2025Solids, total suspended, monthly average32.6 mg/L≤ 15 mg/L117%
November 2025Solids, total suspended, weekly average34.1 mg/L≤ 23 mg/L48%
December 2025Coliform, fecal general, weekly average612 #/100mL≤ 400 #/100mL53%
December 2025Solids, total suspended, monthly average23.5 mg/L≤ 15 mg/L57%
December 2025Solids, total suspended, weekly average27.9 mg/L≤ 23 mg/L21%
January 2026BOD, 5-day, 20 deg. C, monthly average14.4 mg/L≤ 10 mg/L44%
January 2026Solids, total suspended, monthly average32.9 mg/L≤ 15 mg/L119%
January 2026Solids, total suspended, weekly average32.7 mg/L≤ 23 mg/L42%
February 2026BOD, 5-day, 20 deg. C, monthly average11.9 mg/L≤ 10 mg/L19%
February 2026Solids, total suspended, monthly average33.5 mg/L≤ 15 mg/L123%
February 2026Solids, total suspended, weekly average33.5 mg/L≤ 23 mg/L46%
June 2026Solids, total suspended, monthly average18.17411 mg/L≤ 15 mg/L21%

Limits in force (38)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 23 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 23 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendedweekly average≤ 23 mg/Lall year
Solids, total suspendedweekly average≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 34 lb/dall year
Solids, total suspendedmonthly average≤ 34 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

New limits from Aug 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, instantaneous maximum0.033 mg/Lnew——

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0020508 · MCP: https://passage-data.com/mcp