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Carencro City of - Carencro Wastewater Treatment Plant

Sewage treatment plant, Carencro, Louisiana. NPDES permit LA0020150, in force until Jun 30, 2031. Last 12 months: over a limit 34 times (last June 2026), 4 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
35 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 34 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average18.48 mg/L≤ 5 mg/L270%
October 2025Nitrogen, ammonia total [as N], monthly average50 lb/d≤ 21 lb/d138%
October 2025Nitrogen, ammonia total [as N], weekly average18.8 mg/L≤ 10 mg/L88%
November 2025Nitrogen, ammonia total [as N], monthly average28.55 mg/L≤ 5 mg/L471%
November 2025Nitrogen, ammonia total [as N], monthly average76 lb/d≤ 21 lb/d262%
November 2025Nitrogen, ammonia total [as N], weekly average31.8 mg/L≤ 10 mg/L218%
December 2025Nitrogen, ammonia total [as N], monthly average25.26 mg/L≤ 5 mg/L405%
December 2025Nitrogen, ammonia total [as N], monthly average78 lb/d≤ 21 lb/d271%
December 2025Nitrogen, ammonia total [as N], weekly average27.6 mg/L≤ 10 mg/L176%
January 2026Nitrogen, ammonia total [as N], monthly average22.2 mg/L≤ 10 mg/L122%
January 2026Nitrogen, ammonia total [as N], monthly average72 lb/d≤ 42 lb/d71%
January 2026Nitrogen, ammonia total [as N], weekly average22.4 mg/L≤ 20 mg/L12%
February 2026Nitrogen, ammonia total [as N], monthly average16.7 mg/L≤ 10 mg/L67%
February 2026Nitrogen, ammonia total [as N], monthly average55 lb/d≤ 42 lb/d31%
February 2026Nitrogen, ammonia total [as N], weekly average20.7 mg/L≤ 20 mg/L4%
March 2026Nitrogen, ammonia total [as N], monthly average18.2 mg/L≤ 10 mg/L82%
March 2026Nitrogen, ammonia total [as N], monthly average64 lb/d≤ 42 lb/d52%
March 2026Nitrogen, ammonia total [as N], weekly average21.3 mg/L≤ 20 mg/L7%
April 2026Nitrogen, ammonia total [as N], monthly average23.6 mg/L≤ 10 mg/L136%
April 2026Nitrogen, ammonia total [as N], monthly average78 lb/d≤ 42 lb/d86%
April 2026Nitrogen, ammonia total [as N], weekly average25.1 mg/L≤ 20 mg/L26%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average14 mg/L≤ 10 mg/L40%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average89 lb/d≤ 42 lb/d112%
May 2026BOD, carbonaceous [5 day, 20 C], weekly average17 mg/L≤ 15 mg/L13%
May 2026Nitrogen, ammonia total [as N], monthly average10.4 mg/L≤ 5 mg/L108%
May 2026Nitrogen, ammonia total [as N], monthly average68 lb/d≤ 21 lb/d224%
May 2026Nitrogen, ammonia total [as N], weekly average10.8 mg/L≤ 10 mg/L8%
May 2026Solids, total suspended, monthly average131 lb/d≤ 63 lb/d108%
May 2026Solids, total suspended, monthly average20 mg/L≤ 15 mg/L33%
May 2026Solids, total suspended, weekly average28 mg/L≤ 23 mg/L22%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average11 mg/L≤ 10 mg/L10%
June 2026Nitrogen, ammonia total [as N], monthly average10.2 mg/L≤ 5 mg/L104%
June 2026Nitrogen, ammonia total [as N], monthly average40 lb/d≤ 21 lb/d90%
June 2026Nitrogen, ammonia total [as N], weekly average11.5 mg/L≤ 10 mg/L15%

Limits in force (38)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/LMay–Dec
Solids, total suspendedmonthly average≤ 20 mg/LJan–Apr
Solids, total suspendedweekly average≤ 23 mg/LMay–Dec
Solids, total suspendedweekly average≤ 30 mg/LJan–Apr
Solids, total suspendedmonthly average≤ 63 lb/dMay–Dec
Solids, total suspendedmonthly average≤ 83 lb/dJan–Apr
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 average≤ 10 mg/LJan–Apr
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Dec
Nitrogen, ammonia total [as N]weekly average≤ 20 mg/LJan–Apr
Nitrogen, ammonia total [as N]weekly average≤ 10 mg/LMay–Dec
Nitrogen, ammonia total [as N]monthly average≤ 42 lb/dJan–Apr
Nitrogen, ammonia total [as N]monthly average≤ 21 lb/dMay–Dec
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 plantweekly averagereport only (MGD)all year
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan–Apr
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/LJan–Apr
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LMay–Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 83 lb/dJan–Apr
BOD, carbonaceous [5 day, 20 C]monthly average≤ 42 lb/dMay–Dec
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 Jul 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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0020150 · MCP: https://passage-data.com/mcp