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Knoxville Boro Tioga Cnty

Sewage treatment plant, Knoxville, Pennsylvania. NPDES permit PA0114979 expired Aug 31, 2026; its limits still apply. Last 12 months: over a limit 9 times (last May 2026), 57 required values missing. Source: EPA ECHO, Oct 22, 2026.

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

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

Period endingParameterReportedLimitOver by
November 2025Chlorine, total residual, monthly average.51 mg/L≤ .5 mg/L2%
November 2025Phosphorus, total [as P], monthly average2.1 mg/L≤ 2 mg/L5%
January 2026Phosphorus, total [as P], monthly average2.1 mg/L≤ 2 mg/L5%
February 2026Phosphorus, total [as P], monthly average2.2 mg/L≤ 2 mg/L10%
April 2026Phosphorus, total [as P], monthly average2≤ 1.2 lb/d67%
April 2026Phosphorus, total [as P], monthly average2.2 mg/L≤ 2 mg/L10%
April 2026Phosphorus, total [as P], weekly average2.4≤ 1.8 lb/d33%
May 2026Phosphorus, total [as P], monthly average1.4≤ 1.2 lb/d17%
May 2026Phosphorus, total [as P], monthly average2.4 mg/L≤ 2 mg/L20%

Limits in force (31)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimumreport only (mg/L)all 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
BOD, 5-day, 20 deg. Cdaily maximumreport 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≤ 18 lb/dall year
Solids, total suspendedweekly average≤ 26 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 2 mg/Lall year
Phosphorus, total [as P]weekly average≤ 3 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1.2 lb/dall year
Phosphorus, total [as P]weekly average≤ 1.8 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≤ .5 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ 1.6 mg/Lall year
E. colidaily maximumreport only (#/100mL)all year
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal generalgeometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLMay–Sep
Coliform, fecal generalinstantaneous maximum≤ 10000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
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≤ 15 lb/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 23 lb/dall year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/PA0114979 · MCP: https://passage-data.com/mcp