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Vivian Town of - WWTP

Sewage treatment plant, Vivian, Louisiana. NPDES permit LA0020061, in force until Jul 31, 2031. Last 12 months: over a limit 13 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (32 values), form Q quarterly (6 values), form Y yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
17 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
October 2025Solids, total suspended, monthly average40.5 mg/L≤ 15 mg/L170%
October 2025Solids, total suspended, monthly average92.5 lb/d≤ 75 lb/d23%
October 2025Solids, total suspended, weekly average40.3 mg/L≤ 23 mg/L75%
November 2025BOD, 5-day, 20 deg. C, monthly average22.5 mg/L≤ 10 mg/L125%
November 2025BOD, 5-day, 20 deg. C, monthly average50.7 lb/d≤ 50 lb/d1%
November 2025BOD, 5-day, 20 deg. C, weekly average25.5 mg/L≤ 15 mg/L70%
November 2025Coliform, fecal general, monthly geometric mean4683 #/100mL≤ 200 #/100mL2242%
November 2025Coliform, fecal general, weekly geometric mean13300 #/100mL≤ 400 #/100mL3225%
December 2025Coliform, fecal general, weekly geometric mean448 #/100mL≤ 400 #/100mL12%
April 2026Solids, total suspended, monthly average18.1 mg/L≤ 15 mg/L21%
May 2026Solids, total suspended, monthly average24.6 mg/L≤ 15 mg/L64%
May 2026Solids, total suspended, weekly average23.8 mg/L≤ 23 mg/L3%
August 2026Solids, total suspended, monthly average15.7 mg/L≤ 15 mg/L5%

Limits in force (47)

ParameterStatisticLimitMonths
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≤ 75 lb/dall year
Solids, total suspendedmonthly average≤ 75 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
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]weekly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]weekly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia 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
Mercury, total [as Hg]monthly averagereport only (mg/L)all year
Mercury, total [as Hg]weekly averagereport only (mg/L)all year
Mercury, total [as Hg]monthly averagereport only (lb/d)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 [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 50 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 50 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all 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——
Nitrogen, ammonia total [as N], monthly average7 mg/Lnew——
Nitrogen, ammonia total [as N], monthly average35 lb/dnew——
Nitrogen, ammonia total [as N], weekly average7 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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0020061 · MCP: https://passage-data.com/mcp