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Portville (V)

Sewage treatment plant, Portville, New York. NPDES permit NY0020966, in force until Mar 31, 2028. Last 12 months: over a limit 10 times (last September 2026), 94 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form B monthly (28 values), form S twice a year
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
7 values over a limit, 110 required values missing, 0 of 14 reports late

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

Period endingParameterReportedLimitOver by
November 2025Solids, suspended percent removal, monthly average minimum82.6 %≥ 85 %16%
January 2026Solids, suspended percent removal, monthly average minimum82.2 %≥ 85 %19%
June 2026BOD, 5-day, percent removal, monthly average minimum82.9 %≥ 85 %14%
June 2026Solids, suspended percent removal, monthly average minimum81.7 %≥ 85 %22%
July 2026Coliform, fecal general, 30-day geometric mean> 2000 #/100mL≤ 200 #/100mL—
July 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 400 #/100mL—
August 2026Coliform, fecal general, 30-day geometric mean320 #/100mL≤ 200 #/100mL60%
August 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 400 #/100mL—
September 2026Coliform, fecal general, 30-day geometric mean> 2000 #/100mL≤ 200 #/100mL—
September 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 400 #/100mL—

Limits in force (29)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 195 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 293 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. C7-day averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. C7-day averagereport only (lb/d)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 195 lb/dall year
Solids, total suspended7-day average≤ 293 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspended7-day averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspended7-day averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantrolling average≤ .78 MGDall year
Mercury, total [as Hg]rolling average≤ .7 ng/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

New limits from Jan 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average13 lb/d (Jun–Oct)new——
Nitrogen, ammonia total [as N], monthly average2 mg/L (Jun–Oct)new——
Nitrogen, ammonia total [as N], monthly average3.2 mg/L (Jan, Mar, Apr, Nov, Dec)new——
Nitrogen, ammonia total [as N], monthly average20.8 lb/d (Jan, Mar, Apr, Nov, Dec)new——

How strict are these limits?

Cited limits by parameter: New York'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/NY0020966 · MCP: https://passage-data.com/mcp