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Liberty Potw

Sewage treatment plant, Liberty, Mississippi. NPDES permit MS0023752, in force until Oct 31, 2028. Last 12 months: no values over a limit, 1 of 1 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Y yearly
Renewal application due
May 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
December 2025
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 1 report late

Limits in force (35)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 62.55 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 93.8 lb/dall year
BOD, 5-day, 20 deg. Cmaximum monthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmaximum weekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmaximum monthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cmaximum weekly averagereport only (lb/d)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmaximum monthly average≤ 90 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 135 mg/Lall year
Solids, total suspendedmaximum monthly average≤ 188 lb/dall year
Solids, total suspendedmaximum weekly average≤ 281 lb/dall year
Solids, total suspendedmaximum monthly averagereport only (mg/L)all year
Solids, total suspendedmaximum weekly averagereport only (mg/L)all year
Solids, total suspendedmaximum monthly averagereport only (lb/d)all year
Solids, total suspendedmaximum weekly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmaximum monthly average≤ .25 MGDall year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
Chlorine, total residualmaximum monthly average≤ .167 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .288 mg/Lall year
E. colimaximum monthly average≤ 126 #/100mLall year
E. colimaximum weekly average≤ 410 #/100mLall year
BOD, 5-day, percent removalminimum≥ 65 %all year
Solids, suspended percent removalminimum≥ 65 %all year

New limits from Nov 21, 2026

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, maximum monthly average0.074 mg/Ltighter——
Chlorine, total residual, maximum weekly average0.11 mg/Ltighter——
Nitrogen, ammonia total [as N], maximum monthly average8 mg/Lnew——
Nitrogen, ammonia total [as N], maximum monthly average16.68 lb/dnew——
Nitrogen, ammonia total [as N], maximum weekly average25.02 lb/dnew——
Nitrogen, ammonia total [as N], maximum weekly average12 mg/Lnew——

How strict are these limits?

Cited limits by parameter: Mississippi'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/MS0023752 · MCP: https://passage-data.com/mcp