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Blue Granite Water Company

Dwelling Operators, Except Apartments, Gaffney, South Carolina. NPDES permit SC0023736 expired Feb 28, 2018; 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 (23 values), form 2 quarterly, form 3 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 17 reports late

Limits in force (37)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 4 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≤ 6 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 9 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 60 mg/Lall year
Solids, total suspendedmonthly average≤ 6 lb/dall year
Solids, total suspendeddaily maximum≤ 12 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, total [as N]daily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 4 mg/LMar–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 6 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .4 lb/dMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ .8 lb/dMar–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 2 lb/dJan, Feb, Nov, Dec
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]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 plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .017 mg/Lall year
Chlorine, total residualdaily maximum≤ .029 mg/Lall year
Chlorine, total residualmonthly average≤ .003 lb/dall year
Chlorine, total residualdaily maximum≤ .006 lb/dall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly averagereport 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.

Same industry: the 27 Real Estate permits in South Carolina.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/SC0023736 · MCP: https://passage-data.com/mcp