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

Rapides Parish Sewerage District No.1

Sewage treatment plant, Alexandria, Louisiana. NPDES permit LA0072541 expired Oct 31, 2025; its limits still apply. Last 12 months: over a limit 22 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (34 values), form Q quarterly (12 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 22 values over a limit
Period endingParameterReportedLimitOver by
October 2025Oxygen, dissolved [DO], monthly average minimum4 mg/L≥ 5 mg/L20%
November 2025Solids, total suspended, monthly average33 lb/d≤ 17.9 lb/d84%
November 2025Solids, total suspended, monthly average96 mg/L≤ 20 mg/L380%
November 2025Solids, total suspended, weekly average172 mg/L≤ 30 mg/L473%
January 2026Solids, total suspended, monthly average36 lb/d≤ 17.9 lb/d101%
January 2026Solids, total suspended, monthly average40 mg/L≤ 20 mg/L100%
January 2026Solids, total suspended, weekly average74 mg/L≤ 30 mg/L147%
February 2026Solids, total suspended, monthly average36 lb/d≤ 17.9 lb/d101%
February 2026Solids, total suspended, monthly average63 mg/L≤ 20 mg/L215%
February 2026Solids, total suspended, weekly average78 mg/L≤ 30 mg/L160%
March 2026Solids, total suspended, monthly average33 mg/L≤ 20 mg/L65%
March 2026Solids, total suspended, weekly average63 mg/L≤ 30 mg/L110%
April 2026Nitrogen, ammonia total [as N], monthly average3 mg/L≤ 2 mg/L50%
April 2026Nitrogen, ammonia total [as N], weekly average5 mg/L≤ 4 mg/L25%
April 2026Solids, total suspended, monthly average14 lb/d≤ 13.4 lb/d4%
April 2026Solids, total suspended, monthly average51 mg/L≤ 15 mg/L240%
April 2026Solids, total suspended, weekly average81 mg/L≤ 23 mg/L252%
May 2026Solids, total suspended, monthly average34 lb/d≤ 13.4 lb/d154%
May 2026Solids, total suspended, monthly average39 mg/L≤ 15 mg/L160%
May 2026Solids, total suspended, weekly average74 mg/L≤ 23 mg/L222%
June 2026Solids, total suspended, monthly average23 mg/L≤ 15 mg/L53%
June 2026Solids, total suspended, weekly average43 mg/L≤ 23 mg/L87%

Limits in force (64)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall 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/LApr–Oct
Solids, total suspendedmonthly average≤ 15 mg/LApr–Oct
Solids, total suspendedmonthly average≤ 20 mg/LJan, Feb, Mar, Nov, Dec
Solids, total suspendedmonthly average≤ 20 mg/LJan, Feb, Mar, Nov, Dec
Solids, total suspendedweekly average≤ 23 mg/LApr–Oct
Solids, total suspendedweekly average≤ 23 mg/LApr–Oct
Solids, total suspendedweekly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
Solids, total suspendedweekly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
Solids, total suspendedmonthly average≤ 13.4 lb/dApr–Oct
Solids, total suspendedmonthly average≤ 13.4 lb/dApr–Oct
Solids, total suspendedmonthly average≤ 17.9 lb/dJan, Feb, Mar, Nov, Dec
Solids, total suspendedmonthly average≤ 17.9 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, total [as N]monthly 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]weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LApr–Oct
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LApr–Oct
Nitrogen, ammonia total [as N]weekly average≤ 15 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 15 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/LApr–Oct
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/LApr–Oct
Nitrogen, ammonia total [as N]monthly average≤ 8.9 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 8.9 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.8 lb/dApr–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1.8 lb/dApr–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)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]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)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
Solids, total dissolvedmonthly average≤ 628 lb/dall year
Solids, total dissolvedmonthly average≤ 628 lb/dall 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/LApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LApr–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LApr–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8.9 lb/dApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8.9 lb/dApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17.9 lb/dJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17.9 lb/dJan, Feb, Mar, Nov, Dec

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/LA0072541 · MCP: https://passage-data.com/mcp