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(Unknown Permittee)

Dwelling Operators, Except Apartments, Gaston, South Carolina. NPDES permit SC0030651, in force until Dec 31, 2029. Last 12 months: over a limit 3 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form 1 monthly (25 values), form 2 quarterly (12 values), form 3 yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

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

Period endingParameterReportedLimitOver by
December 2025%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia, daily maximum86≤ 40 %115%
December 2025%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia, monthly average86≤ 25 %244%
March 2026Oxygen, dissolved [DO], minimum4.14≥ 5 mg/L17%

Limits in force (45)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 40 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 21.4 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 42.8 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≤ 32.1 lb/dall year
Solids, total suspendeddaily maximum≤ 64.3 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≤ 3.42 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.99 mg/LMar–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 6.84 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 3.98 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 3.66 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.13 lb/dMar–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 7.32 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 4.6 lb/dMar–Oct
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
Copper, total [as Cu]monthly average≤ .017 mg/Lall year
Copper, total [as Cu]daily maximum≤ .022 mg/Lall year
Copper, total [as Cu]monthly average≤ .01833 lb/dall year
Copper, total [as Cu]daily maximum≤ .02396 lb/dall 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≤ .012 mg/Lall year
Chlorine, total residualdaily maximum≤ .021 mg/Lall year
Chlorine, total residualmonthly average≤ .013 lb/dall year
Chlorine, total residualdaily maximum≤ .022 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
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.

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/SC0030651 · MCP: https://passage-data.com/mcp