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Smethport Boro Auth Mckean Cnty

Sewage treatment plant, Smethport, Pennsylvania. NPDES permit PA0021521, in force until Jan 31, 2031. Last 12 months: no values over a limit, 24 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (23 values), outfall 101 form A monthly (1 value), outfall 001 form Q quarterly
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (29)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 4 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 188 lb/dall year001
Solids, total suspendedweekly average≤ 281 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedmonthly averagereport only (lb/d)all year001
Nitrogen, total [as N]quarterly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]quarterly averagereport only (mg/L)all year001
Copper, total [as Cu]monthly average≤ .037 mg/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year001
Chlorine, total residualmonthly average≤ .5 mg/Lall year001
Chlorine, total residualinstantaneous maximum≤ 1.6 mg/Lall year001
E. coliquarterly averagereport only (#/100mL)all year001
Coliform, fecal generalgeometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec001
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Sep001
Coliform, fecal generalinstantaneous maximum≤ 10000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec001
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLMay–Sep001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 156 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 250 lb/dall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101

New limits from Feb 1, 2030

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average156 lb/d (Jan, Feb, Mar, Apr, Oct, Nov, Dec)new——
Nitrogen, ammonia total [as N], monthly average25 mg/L (Jan, Feb, Mar, Apr, Oct, Nov, Dec)new0.5 mg/L (3 values, 3 below detection)—
Nitrogen, ammonia total [as N], monthly average11 mg/L (May–Sep)new——
Nitrogen, ammonia total [as N], monthly average68 lb/d (May–Sep)new——

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/PA0021521 · MCP: https://passage-data.com/mcp