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

Greater Ouachita Water Company

Sewerage Systems, West Monroe, Louisiana. NPDES permit LA0101834, in force until Jun 30, 2028. Last 12 months: over a limit 7 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (17 values), form Q quarterly (6 values)
Renewal application due
Jan 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
11 values over a limit, 0 required values missing, 0 of 16 reports late

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

Period endingParameterReportedLimitOver by
December 2025BOD, carbonaceous [5 day, 20 C], monthly average10.68 mg/L≤ 10 mg/L7%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average43.17 lb/d≤ 39 lb/d11%
December 2025Solids, total suspended, monthly average15.28 mg/L≤ 15 mg/L2%
December 2025Solids, total suspended, monthly average61.75 lb/d≤ 59 lb/d5%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum16.6 mg/L≤ 15 mg/L11%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average13.01 mg/L≤ 10 mg/L30%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average63.5 lb/d≤ 39 lb/d63%

Limits in force (23)

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/Lall year
Solids, total suspendeddaily maximum≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 59 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 22 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport 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 plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 39 lb/dall year

New limits from Jul 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], daily maximum4.4 mg/Ltighter0.031 mg/L (12 values, 3 below detection)0.00705×
Nitrogen, ammonia total [as N], monthly average1.8 mg/Ltighter0.031 mg/L (12 values, 3 below detection)0.0172×
Nitrogen, ammonia total [as N], monthly average7.2 lb/dtighter0.105 lb/d (12 values)0.0146×

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/LA0101834 · MCP: https://passage-data.com/mcp