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Ridgway Boro Elk Cnty

Sewage treatment plant, major discharger, Ridgway, Pennsylvania. NPDES permit PA0023213 expired Apr 30, 2023; its limits still apply. Last 12 months: no values over a limit, 25 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (25 values), form Q quarterly (15 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 16 reports late

Limits in force (42)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 4 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 550 lb/dall year
Solids, total suspendedweekly average≤ 825 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Chloride [as Cl]monthly averagereport only (mg/L)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year
Fluoride, total [as F]monthly averagereport only (mg/L)all year
Barium, total [as Ba]monthly averagereport only (mg/L)all year
Copper, total [as Cu]monthly averagereport only (mg/L)all year
Strontium, total [as Sr]monthly averagereport only (mg/L)all year
Selenium, total [as Se]quarterly averagereport only (mg/L)all year
Radium 226 + radium 228, totalmonthly averagereport only (pCi/L)all year
Uranium, totalmonthly averagereport only (ug/L)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≤ .5 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ 1.6 mg/Lall year
Solids, total dissolvedquarterly averagereport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Solids, total dissolvedquarterly average≤ 76299 lb/dall year
Solids, total dissolveddaily maximum≤ 183826 lb/dall year
Bromide [as Br]monthly averagereport only (mg/L)all year
Coliform, fecal generalgeometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal generalinstantaneous maximum≤ 10000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLMay–Sep
Alpha gross radioactivitymonthly averagereport only (pCi/L)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 460 lb/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 735 lb/dall year
Osmotic pressure, total, unf whl wtrmonthly averagereport only (mOsm/kg)all year

Cited limits by parameter: Pennsylvania's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/PA0023213 · MCP: https://passage-data.com/mcp