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City of Bennettsville

Sewage treatment plant, major discharger, Bennettsville, South Carolina. NPDES permit SC0025178, in force until Feb 29, 2028. 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 (35 values), form 2 quarterly (4 values), form 3 yearly, form 4 twice a year
Renewal application due
Sep 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 0 of 19 reports late

Limits in force (55)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall 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≤ 976 lb/dall year
Solids, total suspendedweekly average≤ 1464 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≤ 4.26 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.46 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 6.39 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 3.69 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 139 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 80 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 208 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 120 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
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
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≤ .027 mg/Lall year
Chlorine, total residualdaily maximum≤ .047 mg/Lall year
Chlorine, total residualmonthly average≤ .88 lb/dall year
Chlorine, total residualdaily maximum≤ 1.53 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 averagereport only (mg/L)all year
Mercury, total [as Hg]daily maximumreport only (mg/L)all year
Mercury, total [as Hg]monthly averagereport only (lb/d)all year
Mercury, total [as Hg]daily maximumreport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 12.45 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average= 19.8 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average= 405 lb/dall year
BOD, carbonaceous [5 day, 20 C]weekly average= 644 lb/dall year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % 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
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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/SC0025178 · MCP: https://passage-data.com/mcp