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

(Unknown Permittee)

Sewerage Systems, Rock Hill, South Carolina. NPDES permit SC0027189 expired Apr 30, 2024; 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 (29 values), form 2 quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 16 reports late

Limits in force (35)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 60 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 4 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 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≤ 4 lb/dall year
Solids, total suspendeddaily maximum≤ 8 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 6.33 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.47 mg/LMar–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 12.66 mg/LJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 4.94 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ .74 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .29 lb/dMar–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 1.48 lb/dJan, Feb, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ .58 lb/dMar–Oct
Phosphorus, total [as P]monthly average≤ 2 mg/Lall year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ .12 lb/dall 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≤ .016 mg/Lall year
Chlorine, total residualdaily maximum≤ .028 mg/Lall year
Chlorine, total residualmonthly average≤ .002 lb/dall year
Chlorine, total residualdaily maximum≤ .003 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
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average≤ 25 %all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum≤ 40 %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/SC0027189 · MCP: https://passage-data.com/mcp