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Liberty (T)

Sewage treatment plant, Liberty, New York. NPDES permit NY0030252 expired Mar 31, 2026; its limits still apply. Last 12 months: over a limit 8 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (27 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
16 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Phosphorus, total [as P], 30-day arithmetic mean1.403 mg/L≤ 1 mg/L40%
December 2025Solids, suspended percent removal, monthly average minimum84 %≥ 85 %7%
January 2026Solids, suspended percent removal, monthly average minimum79 %≥ 85 %40%
March 2026Solids, suspended percent removal, monthly average minimum82 %≥ 85 %20%
July 2026Nitrogen, ammonia, total [as NH3], daily maximum14.5 mg/L≤ 8 mg/L81%
August 2026Coliform, fecal general, 30-day geometric mean2420 #/100mL≤ 200 #/100mL1110%
August 2026Coliform, fecal general, 7-day geometric mean2420 #/100mL≤ 400 #/100mL505%
August 2026Nitrogen, ammonia, total [as NH3], daily maximum11.1 mg/L≤ 8 mg/L39%

Limits in force (30)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Oxygen demand, ultimate30-day average≤ 113 mg/LJun–Oct
Oxygen demand, ultimate30-day average≤ 149 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Oxygen demand, ultimate30-day average≤ 400 lb/dJun–Oct
Oxygen demand, ultimate30-day average≤ 527 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
Oxygen, dissolved [DO]minimum≥ 7 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspended30-day arithmetic mean≤ 30 mg/Lall year
Solids, total suspended7-day arithmetic mean≤ 45 mg/Lall year
Solids, total suspended30-day arithmetic mean≤ 106 lb/dall year
Solids, total suspended7-day arithmetic mean≤ 160 lb/dall year
Solids, total suspended30-day arithmetic meanreport only (mg/L)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]30-day arithmetic mean≤ 1 mg/Lall year
Nitrogen, ammonia, total [as NH3]daily maximum≤ 8 mg/LJun–Oct
Nitrogen, ammonia, total [as NH3]daily maximum≤ 20 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Flow, in conduit or thru treatment plant30-day arithmetic mean≤ .425 MGDall 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]30-day arithmetic mean≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]30-day arithmetic mean≤ 89 lb/dall year
BOD, carbonaceous [5 day, 20 C]30-day arithmetic meanreport only (mg/L)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %all year

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/NY0030252 · MCP: https://passage-data.com/mcp