Passage Data · Check a report · Use it from your AI

Kershaw Town of

Sewage treatment plant, Lancaster, South Carolina. NPDES permit SC0025798 expired Sep 30, 2024; 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 (27 values), form 1A monthly (35 values), form 2 quarterly (3 values), form 2A quarterly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 4 required values missing, 0 of 32 reports late

Limits in force (77)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5.5 mg/Lall year
Oxygen, dissolved [DO]minimum≥ 5.5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 17.8 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 19.2 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 26.7 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 28.8 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 119 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 160 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 178 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 240 lb/dall year
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 250 lb/dall year
Solids, total suspendedmonthly average≤ 200 lb/dall year
Solids, total suspendedweekly average≤ 375 lb/dall year
Solids, total suspendedweekly average≤ 300 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≤ 4.4 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 5.82 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 6.6 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 3.15 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 8.73 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 3.15 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 29 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 17.5 lb/dMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 48.5 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 14 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 44 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 26.3 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 73 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 21 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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)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
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .011 mg/Lall year
Chlorine, total residualmonthly average≤ .012 mg/Lall year
Chlorine, total residualdaily maximum≤ .02 mg/Lall year
Chlorine, total residualdaily maximum≤ .02 mg/Lall year
Chlorine, total residualmonthly average≤ .09 lb/dall year
Chlorine, total residualmonthly average≤ .08 lb/dall year
Chlorine, total residualdaily maximum≤ .17 lb/dall year
Chlorine, total residualdaily maximum≤ .13 lb/dall year
E. coli30-day geometric mean≤ 126 MPN/100mLall year
E. coli30-day geometric mean≤ 126 MPN/100mLall year
E. colidaily maximum≤ 349 MPN/100mLall year
E. colidaily maximum≤ 349 MPN/100mLall year
E. coli30-day geometric mean≤ 126 MPN/100mLall year
E. coli30-day geometric mean≤ 126 MPN/100mLall year
E. colidaily maximum≤ 800 MPN/100mLall year
E. colidaily maximum≤ 800 MPN/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended 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 dubiamonthly average≤ 25 %all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum= 40 %all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum≤ 40 %all year
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily minimumreport only (%)all year
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily minimumreport only (%)all year

How strict are these limits?

Cited limits by parameter: South Carolina's rules and the federal ones.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/SC0025798 · MCP: https://passage-data.com/mcp