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Hemingway Town of

Sewage treatment plant, Hemingway, South Carolina. NPDES permit SC0039934 expired Aug 31, 2021; its limits still apply. Last 12 months: over a limit 5 times (last February 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form 1 monthly (27 values), form 2 every 60 months
Last report on file
September 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025BOD, 5-day, percent removal, monthly average minimum17.3≥ 23 %7%
December 2025Solids, suspended percent removal, monthly average minimum64.67≥ 65 %1%
January 2026BOD, 5-day, percent removal, monthly average minimum11≥ 23 %16%
January 2026Solids, suspended percent removal, monthly average minimum60≥ 65 %14%
February 2026BOD, 5-day, 20 deg. C, monthly average49.76≤ 45 mg/L11%

Limits in force (35)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 65 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 169 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 254 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 90 mg/Lall year
Solids, total suspendedweekly average≤ 135 mg/Lall year
Solids, total suspendedmonthly average≤ 338 lb/dall year
Solids, total suspendedweekly average≤ 507 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 26.13 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 15 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly averagereport only (mg/L)Jan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 38 lb/dMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 98 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 57 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly averagereport only (lb/d)Jan, 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≤ .1 mg/Lall year
Chlorine, total residualdaily maximum≤ .1 mg/Lall year
Chlorine, total residualmonthly average≤ .38 lb/dall year
Chlorine, total residualdaily maximum≤ .38 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, 5-day, percent removalmonthly average minimum≥ 23 %all year
Solids, suspended percent removalmonthly average minimum≥ 65 %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/SC0039934 · MCP: https://passage-data.com/mcp