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Kershaw County

Sewage treatment plant, major discharger, Lugoff, South Carolina. NPDES permit SC0039870, in force until May 31, 2029. Last 12 months: over a limit 6 times (last April 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form 1 monthly (39 values), form 2 quarterly, form 3 quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
11 values over a limit, 0 required values missing, 0 of 20 reports late

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

Period endingParameterReportedLimitOver by
December 2025E. coli, daily maximum2419≤ 349 MPN/100mL593%
December 2025Solids, suspended percent removal, monthly average minimum80.43≥ 85 %30%
December 2025Solids, total suspended, weekly average54.4≤ 45 mg/L21%
January 2026BOD, 5-day, 20 deg. C, monthly average24.88≤ 23 mg/L8%
February 2026Solids, suspended percent removal, monthly average minimum62.77≥ 85 %148%
April 2026BOD, 5-day, percent removal, monthly average minimum80.11≥ 85 %33%

Limits in force (52)

ParameterStatisticLimitMonths
Oxygen demand, ultimatemonthly averagereport only (lb/d)all year
Oxygen demand, ultimateweekly averagereport only (lb/d)all year
Oxygen, dissolved [DO]minimum≥ 2 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 23 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 34.5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 384 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 576 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≤ 500 lb/dall year
Solids, total suspendedweekly average≤ 750 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≤ 10.7 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 16.1 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 178 lb/dall year
Nitrogen, ammonia total [as N]weekly average≤ 267 lb/dall year
Phosphorus, total [as P]monthly average≤ 4 mg/Lall year
Phosphorus, total [as P]weekly average≤ 6 mg/Lall year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]weekly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly loadreport only (lb/mo)all year
Phosphorus, total [as P]monthly geometric meanreport only (lb/yr)all year
Polychlorinated biphenyls [PCBs]monthly averagereport only (mg/L)all year
Polychlorinated biphenyls [PCBs]daily maximumreport only (mg/L)all year
Polychlorinated biphenyls [PCBs]monthly averagereport only (lb/d)all year
Polychlorinated biphenyls [PCBs]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≤ .5 mg/Lall year
Chlorine, total residualdaily maximum≤ 1 mg/Lall year
Chlorine, total residualmonthly average≤ 8.3 lb/dall year
Chlorine, total residualdaily maximum≤ 16.7 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
Mercury, total [as Hg]monthly average≤ 50 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 147 ng/Lall year
Mercury, total [as Hg]monthly average≤ .00083 lb/dall year
Mercury, total [as Hg]daily maximum≤ .0025 lb/dall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
LC50 Static 48Hr Acute Ceriodaphnia dubiadaily minimumreport only (%)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
Pass/Fail Static 48Hr Acute Ceriodaphnia dubiadaily maximum≤ 0 pass=0;fail=1all year
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily minimumreport only (%)all year

New limits from Apr 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
BOD, 5-day, 20 deg. C, monthly average16.6 mg/Ltighter7.75 mg/L (11 values)0.467×
BOD, 5-day, 20 deg. C, weekly average25 mg/Ltighter13.2 mg/L (11 values)0.528×
Nitrogen, ammonia total [as N], monthly average8.8 mg/Ltighter0.45 mg/L (11 values)0.0511×
Nitrogen, ammonia total [as N], weekly average13.2 mg/Ltighter1 mg/L (11 values)0.0758×

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/SC0039870 · MCP: https://passage-data.com/mcp