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Holly Springs Potw, Number 1

Sewage treatment plant, Holly Springs, Mississippi. NPDES permit MS0025313, in force until Jul 31, 2029. Last 12 months: no values over a limit, 39 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Y yearly
Last report on file
None
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 1 of 1 report late

Limits in force (39)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 27 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 41 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 223 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 334 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≤ 743 lb/dall year
Solids, total suspendedmaximum weekly average≤ 1115 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 (lb/d)all year
Nitrogen, total [as N]maximum weekly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum monthly average≤ 8 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 12 mg/Lall year
Nitrogen, ammonia total [as N]maximum monthly average≤ 66 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 99 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 (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≤ .99 MGDall year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
Chlorine, total residualmaximum monthly average≤ .05 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .086 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 Aug 28, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], maximum monthly average11.5 lb/dtighter——
Nitrogen, ammonia total [as N], maximum monthly average1.39 mg/Ltighter——
Nitrogen, ammonia total [as N], maximum weekly average17.2 lb/dtighter——
Nitrogen, ammonia total [as N], maximum weekly average2.08 mg/Ltighter——

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/MS0025313 · MCP: https://passage-data.com/mcp