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Olean (C)

Sewage treatment plant, major discharger, Olean, City Of, New York. NPDES permit NY0027162 expired Apr 30, 2022; its limits still apply. Last 12 months: over a limit 2 times (last October 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (25 values), form Q quarterly (2 values), form V monthly (3 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 29 reports late

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

Period endingParameterReportedLimit
October 2025Coliform, fecal general, 30-day geometric mean> 7 #/100mL≤ 200 #/100mL
October 2025Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 400 #/100mL

Limits in force (37)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 1753 lb/dall year
Solids, total suspendedmonthly average≤ 3002 lb/dall year
Solids, total suspended7-day average≤ 2629 lb/dall year
Solids, total suspended7-day average≤ 4504 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 10.7 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 7.3 mg/LJun–Oct
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Chromium, total [as Cr]daily maximum≤ 2.1 lb/d (alert, not enforceable)all year
Copper, total [as Cu]daily maximum≤ 1.5 lb/d (alert, not enforceable)all year
Zinc, total [as Zn]daily maximum≤ 11.1 lb/d (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmonthly average≤ 7 MGDall year
Flow, in conduit or thru treatment plantmonthly average≤ 12 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ 2 mg/Lall year
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year
Mercury, total [as Hg]daily maximumreport only (lb/d)all year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2502 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 4003 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 % (alert, not enforceable)all year

How strict are these limits?

Cited limits by parameter: New York'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/NY0027162 · MCP: https://passage-data.com/mcp