Passage Data · Check a report · Use it from your AI

Blackville Town of

Sewage treatment plant, Blackville, South Carolina. NPDES permit SC0026417 expired Aug 31, 2020; its limits still apply. Last 12 months: over a limit 46 times (last August 2026), 2 of 23 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form 1 monthly (27 values), form 2 quarterly, form 3 every 2 months, form 4 yearly, form 5 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
91 values over a limit, 4 required values missing, 5 of 24 reports late

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

All 46 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, daily maximum1203.3≤ 349 MPN/100mL245%
October 2025Nitrogen, ammonia total [as N], monthly average1.87≤ 1.24 mg/L51%
October 2025Nitrogen, ammonia total [as N], weekly average5.6≤ 1.86 mg/L201%
November 2025BOD, 5-day, 20 deg. C, weekly average30≤ 26.1 mg/L15%
November 2025BOD, 5-day, percent removal, monthly average minimum72≥ 85 %87%
November 2025Chlorine, total residual, daily maximum.2≤ .019 mg/L953%
November 2025Chlorine, total residual, monthly average.05≤ .011 mg/L355%
November 2025E. coli, daily maximum920.8≤ 349 MPN/100mL164%
November 2025Nitrogen, ammonia total [as N], monthly average5.2≤ 1.83 mg/L184%
November 2025Nitrogen, ammonia total [as N], weekly average12≤ 2.74 mg/L338%
December 2025Solids, suspended percent removal, monthly average minimum81.8≥ 85 %21%
January 2026BOD, 5-day, 20 deg. C, monthly average20≤ 17.4 mg/L15%
January 2026BOD, 5-day, 20 deg. C, weekly average35≤ 26.1 mg/L34%
January 2026BOD, 5-day, percent removal, monthly average minimum80≥ 85 %33%
January 2026Nitrogen, ammonia total [as N], monthly average6.2≤ 1.83 mg/L239%
January 2026Nitrogen, ammonia total [as N], weekly average9.6≤ 2.74 mg/L250%
January 2026Solids, suspended percent removal, monthly average minimum76≥ 85 %60%
February 2026Nitrogen, ammonia total [as N], monthly average5.9≤ 1.83 mg/L222%
February 2026Nitrogen, ammonia total [as N], weekly average9.1≤ 2.74 mg/L232%
February 2026Solids, suspended percent removal, monthly average minimum67≥ 85 %120%
March 2026Nitrogen, ammonia total [as N], monthly average2.9≤ 1.24 mg/L134%
March 2026Nitrogen, ammonia total [as N], weekly average6.1≤ 1.86 mg/L228%
March 2026Solids, suspended percent removal, monthly average minimum59≥ 85 %173%
April 2026Nitrogen, ammonia total [as N], monthly average1.6≤ 1.24 mg/L29%
April 2026Nitrogen, ammonia total [as N], weekly average4.5≤ 1.86 mg/L142%
May 2026BOD, 5-day, percent removal, monthly average minimum71≥ 85 %93%
May 2026E. coli, daily maximum1046.2≤ 349 MPN/100mL200%
May 2026Oxygen, dissolved [DO], minimum.43≥ 6 mg/L93%
May 2026Solids, suspended percent removal, monthly average minimum73≥ 85 %80%
June 2026E. coli, daily maximum2419.6≤ 349 MPN/100mL593%
June 2026Oxygen, dissolved [DO], minimum3.56≥ 6 mg/L41%
July 2026Chlorine, total residual, daily maximum.16≤ .019 mg/L742%
July 2026Chlorine, total residual, daily maximum.17≤ .13 lb/d31%
July 2026Chlorine, total residual, monthly average.04≤ .011 mg/L264%
July 2026E. coli, 30-day geometric mean327≤ 126 MPN/100mL160%
July 2026E. coli, daily maximum920.8≤ 349 MPN/100mL164%
July 2026Oxygen, dissolved [DO], minimum.42≥ 6 mg/L93%
July 2026Solids, suspended percent removal, monthly average minimum59≥ 85 %173%
August 2026E. coli, 30-day geometric mean622.1≤ 126 MPN/100mL394%
August 2026E. coli, daily maximum2419.6≤ 349 MPN/100mL593%
August 2026Nitrogen, ammonia total [as N], monthly average2.3≤ 1.24 mg/L85%
August 2026Nitrogen, ammonia total [as N], weekly average3.7≤ 1.86 mg/L99%
August 2026Oxygen, dissolved [DO], minimum.19≥ 6 mg/L97%
August 2026Solids, suspended percent removal, monthly average minimum57≥ 85 %187%
August 2026Solids, total suspended, monthly average42≤ 30 mg/L40%
August 2026Solids, total suspended, weekly average66≤ 45 mg/L47%

Limits in force (73)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 17.4 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 26.1 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 116 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 174 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≤ 200 lb/dall year
Solids, total suspendedweekly average≤ 300 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 average≤ 1.83 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.24 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 2.74 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 1.86 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 12 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 8 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 18 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 12 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
Cadmium, total [as Cd]monthly average≤ .0004 mg/Lall year
Cadmium, total [as Cd]daily maximum≤ .002 mg/Lall year
Cadmium, total [as Cd]monthly average≤ .002 lb/dall year
Cadmium, total [as Cd]daily maximum≤ .013 lb/dall 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≤ .067 lb/dall year
Copper, total [as Cu]daily maximum≤ .087 lb/dall year
Lead, total [as Pb]monthly average≤ .003 mg/Lall year
Lead, total [as Pb]daily maximum≤ .083 mg/Lall year
Lead, total [as Pb]monthly average≤ .02 lb/dall year
Lead, total [as Pb]daily maximum≤ .554 lb/dall year
Zinc, total [as Zn]monthly average≤ .16 mg/Lall year
Zinc, total [as Zn]daily maximum≤ .16 mg/Lall year
Zinc, total [as Zn]monthly average≤ 1.07 lb/dall year
Zinc, total [as Zn]daily maximum≤ 1.07 lb/dall year
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ .004 mg/Lall year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ .011 mg/Lall year
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ .027 lb/dall year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ .073 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≤ .011 mg/Lall year
Chlorine, total residualdaily maximum≤ .019 mg/Lall year
Chlorine, total residualmonthly average≤ .07 lb/dall year
Chlorine, total residualdaily maximum≤ .13 lb/dall year
E. colimonthly average≤ 126 MPN/100mLMar–Oct
E. coli30-day geometric mean≤ 126 MPN/100mLMar–Oct
E. coli30-day geometric mean≤ 126 MPN/100mLall year
E. colidaily maximum≤ 349 MPN/100mLMar–Oct
E. colidaily maximum≤ 349 MPN/100mLMar–Oct
E. colidaily maximum≤ 349 MPN/100mLall year
E. colimonthly average≤ 126 MPN/100mLMar–Oct
E. coli30-day geometric mean≤ 126 MPN/100mLMar–Oct
E. coli30-day geometric mean≤ 126 MPN/100mLall year
E. colidaily maximum≤ 800 MPN/100mLMar–Oct
E. colidaily maximum≤ 800 MPN/100mLMar–Oct
E. colidaily maximum≤ 800 MPN/100mLall year
Mercury, total [as Hg]monthly average≤ .000052 mg/Lall year
Mercury, total [as Hg]daily maximum≤ .000151 mg/Lall year
Mercury, total [as Hg]monthly average≤ .000347 lb/dall year
Mercury, total [as Hg]daily maximum≤ .001007 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 geometric meanreport 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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/SC0026417 · MCP: https://passage-data.com/mcp