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Concordia Parish Sewerage District #1 - Ridgecrest WWTP

Sewage treatment plant, Ridgecrest, Louisiana. NPDES permit LA0038601, in force until Feb 28, 2031. Last 12 months: over a limit 35 times (last August 2026). 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
August 2026
Oct 2024 – Sep 2025
62 values over a limit, 0 required values missing, 1 of 16 reports late

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

All 35 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, monthly average20.88 mg/L≤ 10 mg/L109%
October 2025BOD, 5-day, 20 deg. C, weekly average28.3 mg/L≤ 15 mg/L89%
October 2025Coliform, fecal general, weekly geometric mean600 #/100mL≤ 400 #/100mL50%
November 2025BOD, 5-day, 20 deg. C, monthly average14.8 mg/L≤ 10 mg/L48%
November 2025BOD, 5-day, 20 deg. C, weekly average18.51 mg/L≤ 15 mg/L23%
November 2025Coliform, fecal general, weekly geometric mean450 #/100mL≤ 400 #/100mL13%
December 2025BOD, 5-day, 20 deg. C, monthly average23.73 mg/L≤ 10 mg/L137%
December 2025BOD, 5-day, 20 deg. C, weekly average27.47 mg/L≤ 15 mg/L83%
December 2025Coliform, fecal general, monthly geometric mean788 #/100mL≤ 200 #/100mL294%
December 2025Coliform, fecal general, weekly geometric mean1360 #/100mL≤ 400 #/100mL240%
December 2025Solids, total suspended, monthly average17.8 mg/L≤ 15 mg/L19%
January 2026BOD, 5-day, 20 deg. C, monthly average22.02 mg/L≤ 10 mg/L120%
January 2026BOD, 5-day, 20 deg. C, weekly average23.4 mg/L≤ 15 mg/L56%
January 2026Coliform, fecal general, monthly geometric mean864 #/100mL≤ 200 #/100mL332%
January 2026Coliform, fecal general, weekly geometric mean960 #/100mL≤ 400 #/100mL140%
January 2026Solids, total suspended, monthly average17.67 mg/L≤ 15 mg/L18%
February 2026BOD, 5-day, 20 deg. C, monthly average27.05 mg/L≤ 10 mg/L171%
February 2026BOD, 5-day, 20 deg. C, weekly average32.31 mg/L≤ 15 mg/L115%
February 2026Coliform, fecal general, monthly geometric mean235 #/100mL≤ 200 #/100mL18%
February 2026Coliform, fecal general, weekly geometric mean1360 #/100mL≤ 400 #/100mL240%
March 2026BOD, 5-day, 20 deg. C, monthly average19.16 mg/L≤ 10 mg/L92%
March 2026BOD, 5-day, 20 deg. C, weekly average27.57 mg/L≤ 15 mg/L84%
March 2026Coliform, fecal general, monthly geometric mean416 #/100mL≤ 200 #/100mL108%
March 2026Coliform, fecal general, weekly geometric mean740 #/100mL≤ 400 #/100mL85%
March 2026Solids, total suspended, monthly average21 mg/L≤ 15 mg/L40%
March 2026Solids, total suspended, weekly average36 mg/L≤ 23 mg/L57%
April 2026BOD, 5-day, 20 deg. C, weekly average15.43 mg/L≤ 15 mg/L3%
May 2026BOD, 5-day, 20 deg. C, monthly average12.33 mg/L≤ 10 mg/L23%
May 2026BOD, 5-day, 20 deg. C, weekly average15.04 mg/L≤ 15 mg/L0%
May 2026Coliform, fecal general, weekly geometric mean680 #/100mL≤ 400 #/100mL70%
July 2026BOD, 5-day, 20 deg. C, monthly average14.25 mg/L≤ 10 mg/L43%
July 2026BOD, 5-day, 20 deg. C, weekly average30.51 mg/L≤ 15 mg/L103%
July 2026Coliform, fecal general, weekly geometric mean680 #/100mL≤ 400 #/100mL70%
August 2026BOD, 5-day, 20 deg. C, weekly average21.69 mg/L≤ 15 mg/L45%
August 2026Solids, total suspended, weekly average25 mg/L≤ 23 mg/L9%

Limits in force (36)

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≤ 50 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 50 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≤ 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
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
BOD, percent removal [total]monthly average minimum≥ 85 %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
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

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/LA0038601 · MCP: https://passage-data.com/mcp