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Clio Town of

Sewage treatment plant, Clio, South Carolina. NPDES permit SC0040606 expired Aug 31, 2016; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form 1 monthly (25 values), form 2 quarterly (12 values), form 3 every 60 months
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 (47)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 25 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 38 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 75 lb/dall year
Solids, total suspendedweekly average≤ 113 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 4.36 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 6.54 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 1.5 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 11 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 3 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 17 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 5 lb/dMar–Oct
Cadmium, total [as Cd]monthly averagereport only (mg/L)all year
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year
Cadmium, total [as Cd]monthly averagereport only (lb/d)all year
Cadmium, total [as Cd]daily maximumreport only (lb/d)all year
Copper, total [as Cu]monthly averagereport only (mg/L)all year
Copper, total [as Cu]daily maximumreport only (mg/L)all year
Copper, total [as Cu]monthly averagereport only (lb/d)all year
Copper, total [as Cu]daily maximumreport only (lb/d)all year
Lead, total [as Pb]monthly averagereport only (mg/L)all year
Lead, total [as Pb]daily maximumreport only (mg/L)all year
Lead, total [as Pb]monthly averagereport only (lb/d)all year
Lead, total [as Pb]daily maximumreport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .011 mg/LJan, Feb, Nov, Dec
Chlorine, total residualmonthly average≤ .019 mg/LMar–Oct
Chlorine, total residualdaily maximum≤ .019 mg/LJan, Feb, Nov, Dec
Chlorine, total residualdaily maximum≤ .03 mg/LMar–Oct
Chlorine, total residualmonthly average≤ .05 lb/dJan, Feb, Nov, Dec
Chlorine, total residualmonthly average≤ .05 lb/dMar–Oct
Chlorine, total residualdaily maximum≤ .08 lb/dJan, Feb, Nov, Dec
Chlorine, total residualdaily maximum≤ .08 lb/dMar–Oct
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year
Solids, suspended percent removalmonthly average minimum≥ 65 %all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average≤ 25 %all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum≤ 40 %all year

How strict are these limits?

Cited limits by parameter: South Carolina'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/SC0040606 · MCP: https://passage-data.com/mcp