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Georgetown City of

Sewage treatment plant, major discharger, Georgetown, South Carolina. NPDES permit SC0040029 expired Mar 31, 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 (36 values), form 2 yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (68)

ParameterStatisticLimitMonths
Oxygen demand, ultimatemonthly average≤ 2015 lb/dJan, Feb, Nov, Dec
Oxygen demand, ultimatemonthly average≤ 1958 lb/dMar–Oct
Oxygen demand, ultimateweekly average≤ 2015 lb/dJan, Feb, Nov, Dec
Oxygen demand, ultimateweekly average≤ 1958 lb/dMar–Oct
Oxygen, dissolved [DO]minimum≥ 6 mg/LMar–Oct
Oxygen, dissolved [DO]minimum≥ 6 mg/LJan, Feb, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LMar–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LJan, Feb, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/LMar–Oct
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/LJan, Feb, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 1001 lb/dMar–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 1001 lb/dJan, Feb, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 1502 lb/dMar–Oct
BOD, 5-day, 20 deg. Cweekly average≤ 1502 lb/dJan, Feb, Nov, Dec
pHminimum≥ 6 SUMar–Oct
pHminimum≥ 6 SUJan, Feb, Nov, Dec
pHmaximum≤ 9 SUMar–Oct
pHmaximum≤ 9 SUJan, Feb, Nov, Dec
Solids, total suspendedmonthly average≤ 30 mg/LMar–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Nov, Dec
Solids, total suspendedweekly average≤ 45 mg/LMar–Oct
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Nov, Dec
Solids, total suspendedmonthly average≤ 3002 lb/dMar–Oct
Solids, total suspendedmonthly average≤ 3002 lb/dJan, Feb, Nov, Dec
Solids, total suspendedweekly average≤ 4503 lb/dMar–Oct
Solids, total suspendedweekly average≤ 4503 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 200 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 200 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 300 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 300 lb/dMar–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Jan, Feb, Nov, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Mar–Oct
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)Jan, Feb, Nov, Dec
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)Mar–Oct
Chlorine, total residualmonthly average≤ .2 mg/LJan, Feb, Nov, Dec
Chlorine, total residualmonthly average≤ .22 mg/LMar–Oct
Chlorine, total residualdaily maximum≤ .35 mg/LJan, Feb, Nov, Dec
Chlorine, total residualdaily maximum≤ .37 mg/LMar–Oct
Chlorine, total residualmonthly average≤ 20 lb/dJan, Feb, Nov, Dec
Chlorine, total residualmonthly average≤ 22 lb/dMar–Oct
Chlorine, total residualdaily maximum≤ 35 lb/dJan, Feb, Nov, Dec
Chlorine, total residualdaily maximum≤ 37 lb/dMar–Oct
Chlorine, total residualminimum≥ .12 mg/LMar–Oct
Chlorine, total residualminimum≥ .12 mg/LJan, Feb, Nov, Dec
Enterococci30-day geometric mean≤ 35 MPN/100mLJan, Feb, Nov, Dec
Enterococci30-day geometric mean≤ 35 MPN/100mLMar–Oct
Enterococcidaily maximum≤ 501 MPN/100mLJan, Feb, Nov, Dec
Enterococcidaily maximum≤ 501 MPN/100mLMar–Oct
Enterococci30-day geometric mean≤ 35 MPN/100mLMar–Oct
Enterococci30-day geometric mean≤ 35 MPN/100mLJan, Feb, Nov, Dec
Enterococcidaily maximum≤ 800 MPN/100mLMar–Oct
Enterococcidaily maximum≤ 800 MPN/100mLJan, Feb, Nov, Dec
Time each pumping rate utilizedmonthly average≤ 2.75 hrMar–Oct
BOD, 5-day, percent removalmonthly average minimum≥ 85 %Jan, Feb, Nov, Dec
BOD, 5-day, percent removalmonthly average minimum≥ 85 %Mar–Oct
Solids, suspended percent removalmonthly average minimum≥ 75 %Mar–Oct
Solids, suspended percent removalmonthly average minimum≥ 75 %Jan, Feb, Nov, Dec
Time, starting [hhmmusing 24-hour clock]minimum≥ .5 timeMar–Oct
Time, starting [hhmmusing 24-hour clock]minimum≥ .5 timeMar–Oct
Time, ending [hhmm using 24-hour clock]monthly average≤ 3.25 timeMar–Oct
Time, ending [hhmm using 24-hour clock]monthly average≤ 3.25 timeMar–Oct
Tidal stagedaily maximum≤ 0 ebb/floodMar–Oct
% Effect Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)monthly average≤ 25 %Mar–Oct
% Effect Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)daily maximum≤ 40 %Mar–Oct

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/SC0040029 · MCP: https://passage-data.com/mcp