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Manning City of

Sewage treatment plant, major discharger, Manning, South Carolina. NPDES permit SC0020419 expired Oct 31, 2023; its limits still apply. Last 12 months: over a limit 2 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form 1 monthly (29 values), form 2 quarterly, form 3 quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 1 of 20 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
August 2026Nitrogen, ammonia total [as N], monthly average3.38≤ 2.12 mg/L59%
August 2026Nitrogen, ammonia total [as N], weekly average10.8≤ 3.18 mg/L240%

Limits in force (39)

ParameterStatisticLimitMonths
Oxygen demand, ultimatemonthly average≤ 638.8 lb/dall year
Oxygen demand, ultimateweekly average≤ 958.2 lb/dall year
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 417 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 626 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≤ 1251 lb/dall year
Solids, total suspendedweekly average≤ 1877 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 2.12 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 4.36 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 3.18 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 6.54 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 88 lb/dMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 182 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 132 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 273 lb/dJan, Feb, Nov, Dec
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≤ .011 mg/Lall year
Chlorine, total residualdaily maximum≤ .019 mg/Lall year
Chlorine, total residualmonthly average≤ .46 lb/dall year
Chlorine, total residualdaily maximum≤ .79 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 average≤ 50 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 120 ng/Lall year
Mercury, total [as Hg]monthly average≤ .00209 lb/dall year
Mercury, total [as Hg]daily maximum≤ .005 lb/dall 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 average≤ 25 %all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum≤ 40 %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/SC0020419 · MCP: https://passage-data.com/mcp