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Hickory Flat Potw

Sewage treatment plant, Hickory Flat, Mississippi. NPDES permit MS0024694, in force until Jul 31, 2031. Last 12 months: over a limit 3 times (last December 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Y yearly
Last report on file
December 2025
Oct 2024 – Sep 2025
6 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 2025Flow, in conduit or thru treatment plant, maximum monthly average.108 MGD≤ .09 MGD20%
December 2025Oxygen, dissolved [DO], minimum4 mg/L≥ 6 mg/L33%
December 2025pH, maximum9.1 SU≤ 9 SU—

Limits in force (42)

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≤ 23 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 34 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≤ 68 lb/dall year
Solids, total suspendedmaximum weekly average≤ 101 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≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]maximum monthly average≤ 6 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 9 mg/Lall year
Nitrogen, ammonia total [as N]maximum monthly average≤ 7.5 lb/dall year
Nitrogen, ammonia total [as N]maximum monthly average≤ 4.5 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 11.3 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 6.75 lb/dall 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≤ .09 MGDall year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
Chlorine, total residualmaximum monthly average≤ .059 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .102 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

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/MS0024694 · MCP: https://passage-data.com/mcp