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Richland County Utilities & Services

Sewage treatment plant, Eastover, South Carolina. NPDES permit SC0047911, in force until Nov 30, 2026. Last 12 months: over a limit once (last October 2025), 1 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form A monthly (37 values), form 2A quarterly, form 3 yearly
Renewal application due
Jun 3, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 13 reports late

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

Period endingParameterReportedLimitOver by
October 2025Phosphorus, total [as P], monthly average1.68≤ 1.13 mg/L49%

Limits in force (61)

ParameterStatisticLimitMonths
Oxygen demand, ultimatemonthly average≤ 1449.2 lb/dall year
Oxygen demand, ultimateweekly averagereport only (lb/d)all year
Oxygen, dissolved [DO]minimum≥ 2 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≤ 300 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 450 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≤ 300 lb/dall year
Solids, total suspendedweekly average≤ 450 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 averagereport only (mg/L)Mar–Oct
Nitrogen, ammonia total [as N]weekly averagereport only (mg/L)Mar–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Mar–Oct
Nitrogen, ammonia total [as N]weekly averagereport only (lb/d)Mar–Oct
Phosphorus, total [as P]monthly average≤ 3 mg/Lall year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 8.2 lb/dall year
Phosphorus, total [as P]weekly averagereport only (lb/d)all year
Cadmium, total [as Cd]monthly averagereport only (mg/L)all year
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year
Cadmium, total [as Cd]monthly averagereport only (lb/d)all year
Cadmium, total [as Cd]daily maximumreport only (lb/d)all year
Copper, total [as Cu]monthly averagereport only (mg/L)all year
Copper, total [as Cu]daily maximumreport only (mg/L)all year
Copper, total [as Cu]monthly averagereport only (lb/d)all year
Copper, total [as Cu]daily maximumreport 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
Zinc, total [as Zn]monthly averagereport only (mg/L)all year
Zinc, total [as Zn]daily maximumreport only (mg/L)all year
Zinc, total [as Zn]monthly averagereport only (lb/d)all year
Zinc, total [as Zn]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≤ .5 mg/Lall year
Chlorine, total residualdaily maximum≤ 1 mg/Lall year
Chlorine, total residualmonthly average≤ 5 lb/dall year
Chlorine, total residualdaily maximum≤ 10 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 (ug/L)all year
Mercury, total [as Hg]daily maximumreport only (ug/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≥ 85 %all year
Solids, suspended percent 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/SC0047911 · MCP: https://passage-data.com/mcp