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Heath Springs Town of

Sewage treatment plant, Heath Springs, South Carolina. NPDES permit SC0040118 expired Mar 31, 2023; 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 2 quarterly (8 values), form 3 every 60 months
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

Limits in force (41)

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≤ 37.5 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 56.3 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≤ 37.5 lb/dall year
Solids, total suspendedweekly average≤ 56.3 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 4.64 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.21 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 6.96 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 3.32 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 5.8 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.76 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 8.7 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 4.15 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
Copper, total [as Cu]monthly average≤ .01 mg/Lall year
Copper, total [as Cu]daily maximum≤ .013 mg/Lall year
Copper, total [as Cu]monthly average≤ .013 lb/dall year
Copper, total [as Cu]daily maximum≤ .017 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≤ .012 mg/Lall year
Chlorine, total residualdaily maximum≤ .02 mg/Lall year
Chlorine, total residualmonthly average≤ .015 lb/dall year
Chlorine, total residualdaily maximum≤ .025 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 averagereport only (%)all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximumreport 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/SC0040118 · MCP: https://passage-data.com/mcp