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Adnah Hills Inc

Mobile Home Site Operators, Rock Hill, South Carolina. NPDES permit SC0041670 expired Sep 30, 2020; its limits still apply. Last 12 months: over a limit 11 times (last November 2025), 1 of 14 reports late. 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 every 60 months (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 4 of 17 reports late

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

Period endingParameterReportedLimitOver by
October 2025E. coli, 30-day geometric mean177≤ 126 MPN/100mL40%
October 2025E. coli, daily maximum2419≤ 349 MPN/100mL593%
October 2025Nitrogen, ammonia total [as N], daily maximum12.7≤ 3 mg/L323%
October 2025Nitrogen, ammonia total [as N], daily maximum4.2≤ 1 lb/d320%
October 2025Nitrogen, ammonia total [as N], monthly average2.3≤ .5 lb/d360%
October 2025Nitrogen, ammonia total [as N], monthly average7.9≤ 1.5 mg/L427%
November 2025BOD, 5-day, 20 deg. C, monthly average5.1≤ 4.8 lb/d6%
November 2025Nitrogen, ammonia total [as N], daily maximum13.9≤ 6 mg/L132%
November 2025Nitrogen, ammonia total [as N], daily maximum5.9≤ 2 lb/d195%
November 2025Nitrogen, ammonia total [as N], monthly average13.9≤ 3 mg/L363%
November 2025Nitrogen, ammonia total [as N], monthly average5.9≤ 1 lb/d490%

Limits in force (43)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 14.3 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 28.6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 4.8 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 9.6 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≤ 10 lb/dall year
Solids, total suspendeddaily maximum≤ 20 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 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMar–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 6 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .5 lb/dMar–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 2 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 1 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≤ .015 mg/Lall year
Copper, total [as Cu]daily maximum≤ .02 mg/Lall year
Copper, total [as Cu]monthly average≤ .005 lb/dall year
Copper, total [as Cu]daily maximum≤ .007 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≤ .016 mg/Lall year
Chlorine, total residualdaily maximum≤ .027 mg/Lall year
Chlorine, total residualmonthly average≤ .01 lb/dall year
Chlorine, total residualdaily maximum≤ .01 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≤ 348 MPN/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/SC0041670 · MCP: https://passage-data.com/mcp