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Lancaster County Water & Sewer District

Sewage treatment plant, major discharger, Fort Mill, South Carolina. NPDES permit SC0047864 expired Jul 31, 2025; 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 1A monthly (36 values), form 1B monthly (32 values), form 1C monthly (32 values), form 3 monthly (1 value), form 4 quarterly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 36 reports late

Limits in force (105)

ParameterStatisticLimitMonths
Oxygen demand, ultimatemonthly average≤ 3285 lb/dall year
Oxygen demand, ultimatemonthly average≤ 3285 lb/dall year
Oxygen demand, ultimatemonthly average≤ 3285 lb/dall year
Oxygen demand, ultimateweekly averagereport only (lb/d)all year
Oxygen demand, ultimateweekly averagereport only (lb/d)all year
Oxygen demand, ultimateweekly averagereport only (lb/d)all year
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 22.5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 1251 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 1001 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 1877 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 1877 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 1502 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 2816 lb/dall year
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 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 suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 1001 lb/dall year
Solids, total suspendedmonthly average≤ 1877 lb/dall year
Solids, total suspendedmonthly average≤ 3753 lb/dall year
Solids, total suspendedweekly average≤ 1502 lb/dall year
Solids, total suspendedweekly average≤ 2816 lb/dall year
Solids, total suspendedweekly average≤ 5630 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all 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]weekly averagereport only (mg/L)all year
Nitrogen, total [as N]weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly average≤ 207000 lb/dall year
Nitrogen, total [as N]monthly average≤ 207000 lb/dall year
Nitrogen, total [as N]monthly average≤ 207000 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 20 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 7.5 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 30 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 7.5 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 313 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 834 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 626 lb/dall year
Nitrogen, ammonia total [as N]weekly average≤ 470 lb/dall year
Nitrogen, ammonia total [as N]weekly average≤ 1251 lb/dall year
Nitrogen, ammonia total [as N]weekly average≤ 939 lb/dall year
Phosphorus, total [as P]monthly average≤ 2 mg/Lall year
Phosphorus, total [as P]monthly average≤ 2 mg/Lall year
Phosphorus, total [as P]monthly average≤ 2 mg/Lall year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 610 lb/dall year
Phosphorus, total [as P]monthly average≤ 610 lb/dall year
Phosphorus, total [as P]monthly average≤ 610 lb/dall year
Phosphorus, total [as P]monthly average≤ 6095 lb/dall year
Phosphorus, total [as P]monthly average≤ 6095 lb/dall year
Phosphorus, total [as P]monthly average≤ 6095 lb/dall 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
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 residualmonthly average≤ .5 mg/Lall year
Chlorine, total residualmonthly average≤ .44 mg/Lall year
Chlorine, total residualdaily maximum≤ 1 mg/Lall year
Chlorine, total residualdaily maximum≤ 1 mg/Lall year
Chlorine, total residualdaily maximum≤ .75 mg/Lall year
Chlorine, total residualmonthly average≤ 21 lb/dall year
Chlorine, total residualmonthly average≤ 31 lb/dall year
Chlorine, total residualmonthly average≤ 55 lb/dall year
Chlorine, total residualdaily maximum≤ 42 lb/dall year
Chlorine, total residualdaily maximum≤ 63 lb/dall year
Chlorine, total residualdaily maximum≤ 94 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
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
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

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/SC0047864 · MCP: https://passage-data.com/mcp