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Pickens County Public Service Commission

Sewage treatment plant, Liberty, South Carolina. NPDES permit SC0026191 expired Oct 31, 2025; its limits still apply. Last 12 months: over a limit 9 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form 1 monthly (27 values), form 2 quarterly, form 3 quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
14 values over a limit, 0 required values missing, 2 of 20 reports late

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

Period endingParameterReportedLimitOver by
December 2025Solids, suspended percent removal, monthly average minimum84≥ 85 %7%
December 2025Solids, total suspended, monthly average30.8≤ 30 mg/L3%
December 2025Solids, total suspended, weekly average48.8≤ 45 mg/L8%
March 2026E. coli, daily maximum1046≤ 349 MPN/100mL200%
March 2026Solids, total suspended, monthly average31.6≤ 30 mg/L5%
March 2026Solids, total suspended, weekly average62≤ 45 mg/L38%
April 2026Solids, total suspended, monthly average34.4≤ 30 mg/L15%
April 2026Solids, total suspended, weekly average48.5≤ 45 mg/L8%
August 2026E. coli, daily maximum24196≤ 349 MPN/100mL6833%

Limits in force (45)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 125 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 188 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≤ 125 lb/dall year
Solids, total suspendedweekly average≤ 188 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, total [as N]weekly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 5.41 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5.05 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 8.11 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 7.57 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 23 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 21 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 35 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 32 lb/dMar–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]weekly averagereport only (lb/d)all year
Aluminum, total [as Al]monthly average= .758 mg/Lall year
Aluminum, total [as Al]daily maximum= .758 mg/Lall year
Aluminum, total [as Al]monthly average= 3.16 lb/dall year
Aluminum, total [as Al]daily maximum= 3.16 lb/dall 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≤ .035 mg/Lall year
Chlorine, total residualdaily maximum≤ .061 mg/Lall year
Chlorine, total residualmonthly average≤ .15 lb/dall year
Chlorine, total residualdaily maximum≤ .25 lb/dall year
E. coli30-day geometric mean≤ 126 MPN/100mLall year
E. colidaily maximum≤ 349 MPN/100mLall year
E. coli30-day geometric mean≤ 126 MPN/100mLall year
E. colidaily maximum≤ 800 MPN/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %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/SC0026191 · MCP: https://passage-data.com/mcp