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Clinton Potw, Southside

Sewage treatment plant, major discharger, Clinton, Mississippi. NPDES permit MS0054992, in force until Apr 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (59 values), form Q quarterly (2 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

Limits in force (61)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
Oxygen, dissolved [DO]minimumreport only (mg/L)all year
Oxygen, dissolved [DO]maximumreport only (mg/L)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 876 lb/dall year
Solids, total suspendedmaximum weekly average≤ 1314 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmaximum weekly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedmaximum weekly averagereport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly average≤ 396.9 lb/dall year
Nitrogen, total [as N]maximum weekly average≤ 595.4 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, total [as N]maximum weekly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 58 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 88 lb/dall year
Nitrogen, ammonia total [as N]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]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 103.41 lb/dall year
Phosphorus, total [as P]maximum weekly average≤ 155.12 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]maximum weekly averagereport only (lb/d)all year
Chromium, hexavalent [as Cr]monthly average≤ .011 mg/Lall year
Chromium, hexavalent [as Cr]maximum weekly average≤ .016 mg/Lall year
Zinc, total recoverablemonthly average≤ .094 mg/Lall year
Zinc, total recoverablemaximum weekly average≤ .094 mg/Lall year
Copper, total recoverablemonthly average≤ .024 mg/Lall year
Copper, total recoverablemaximum weekly average≤ .033 mg/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ 3.5 MGDall year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
E. colimonthly average≤ 126 #/100mLall year
E. colimaximum weekly average≤ 410 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 12 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 234 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 350 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]maximum weekly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]maximum weekly averagereport only (lb/d)all year
BOD, carbonaceous, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year
Sludge settleability 30 minuteminimumreport only (mL/L)all year
Sludge settleability 30 minutemaximumreport only (mL/L)all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimum≥ 100 %all year
%Effect Static Renewal 7Day Chronic Pimephales promelasminimum≥ 100 %all year

New limits from May 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average40 lb/dtighter1.905 lb/d (12 values)0.0476×
Nitrogen, ammonia total [as N], monthly average1.37 mg/Ltighter0.1 mg/L (12 values)0.073×
Nitrogen, ammonia total [as N], maximum weekly average60 lb/dtighter2.5 lb/d (12 values)0.0417×
Nitrogen, ammonia total [as N], maximum weekly average2.1 mg/Ltighter0.1 mg/L (12 values)0.0476×

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/MS0054992 · MCP: https://passage-data.com/mcp