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New Houlka Potw, West

Sewage treatment plant, Houlka, Mississippi. NPDES permit MS0025216, in force until Sep 30, 2031. Last 12 months: over a limit 11 times (last December 2025), 1 of 1 reports late. Source: EPA ECHO, Oct 22, 2026.

Last report on file
December 2025
Oct 2024 – Sep 2025
10 values over a limit, 0 required values missing, 0 of 1 report late

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

Period endingParameterReportedLimitOver by
December 2025BOD, 5-day, 20 deg. C, maximum monthly average48.1 lb/d≤ 10 lb/d381%
December 2025BOD, 5-day, 20 deg. C, maximum monthly average9 mg/L≤ 6 mg/L50%
December 2025BOD, 5-day, 20 deg. C, maximum weekly average48.1 lb/d≤ 15 lb/d221%
December 2025Chlorine, total residual, maximum monthly average.015 mg/L≤ .011 mg/L36%
December 2025E. coli, maximum monthly average160 #/100mL≤ 126 #/100mL27%
December 2025Flow, in conduit or thru treatment plant, maximum monthly average.335 MGD≤ .2 MGD68%
December 2025Nitrogen, ammonia total [as N], maximum monthly average27.7 lb/d≤ 1.7 lb/d1529%
December 2025Nitrogen, ammonia total [as N], maximum monthly average5.2 mg/L≤ 1 mg/L420%
December 2025Nitrogen, ammonia total [as N], maximum weekly average27.7 lb/d≤ 2.5 lb/d1008%
December 2025Nitrogen, ammonia total [as N], maximum weekly average5.2 mg/L≤ 1.5 mg/L247%
December 2025Oxygen, dissolved [DO], minimum2.5 mg/L≥ 6 mg/L58%

Limits in force (43)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 9 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 10 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 15 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≤ 150 lb/dall year
Solids, total suspendedmaximum weekly average≤ 225 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, total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, total [as N]maximum monthly averagereport only (lb/d)all year
Nitrogen, total [as N]maximum weekly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum monthly average≤ 1 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.5 mg/Lall year
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.7 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.5 lb/dall 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
Phosphorus, total [as P]maximum monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum weekly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum monthly averagereport only (lb/d)all year
Phosphorus, total [as P]maximum weekly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmaximum monthly average≤ .2 MGDall year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
Chlorine, total residualmaximum monthly average≤ .011 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .019 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

How strict are these limits?

Cited limits by parameter: Mississippi'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/MS0025216 · MCP: https://passage-data.com/mcp