Passage Data · Check a report · Use it from your AI

Cooperstown (V)

Sewage treatment plant, Cooperstown, New York. NPDES permit NY0023591, in force until Oct 31, 2028. Last 12 months: over a limit 14 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (39 values), form S twice a year
Renewal application due
May 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
5 values over a limit, 7 required values missing, 1 of 12 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
December 2025Nitrogen, ammonia total [as N], monthly average16.6 mg/L≤ 8.2 mg/L102%
December 2025Nitrogen, ammonia total [as N], monthly average45.9 lb/d≤ 35 lb/d31%
January 2026Nitrogen, ammonia total [as N], monthly average14.4 mg/L≤ 8.2 mg/L76%
January 2026Nitrogen, ammonia total [as N], monthly average55.2 lb/d≤ 35 lb/d58%
February 2026Nitrogen, ammonia total [as N], monthly average13.8 mg/L≤ 8.2 mg/L68%
February 2026Nitrogen, ammonia total [as N], monthly average43.5 lb/d≤ 35 lb/d24%
March 2026Flow, in conduit or thru treatment plant, monthly average.6 MGD≤ .52 MGD15%
March 2026Nitrogen, ammonia total [as N], monthly average10.1 mg/L≤ 8.2 mg/L23%
March 2026Nitrogen, ammonia total [as N], monthly average49.1 lb/d≤ 35 lb/d40%
April 2026Flow, in conduit or thru treatment plant, monthly average≤ .62 MGD≤ .52 MGD19%
June 2026Phosphorus, total [as P], monthly average1.3 mg/L≤ 1 mg/L30%
July 2026Flow, in conduit or thru treatment plant, monthly average.54 MGD≤ .52 MGD4%
August 2026Flow, in conduit or thru treatment plant, monthly average.53 MGD≤ .52 MGD2%
August 2026Phosphorus, total [as P], monthly average1.1 mg/L≤ 1 mg/L10%

Limits in force (43)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg Fall year
Oxygen, dissolved [DO]daily minimum≥ 4 mg/Lall 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≤ 130 lb/dall year
Solids, total suspended7-day average≤ 200 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year
Nitrogen, total [as N]12-month total≤ 27000 lb/yrall year
Nitrogen, ammonia total [as N]monthly average≤ 8.2 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 35 lb/dall year
Nitrogen, nitrite total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrite total [as N]monthly averagereport only (lb/d)all year
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as N]monthly averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year
Phosphorus, total [as P]12-month total≤ 1140 lb/yrall year
Flow, in conduit or thru treatment plantmonthly average≤ .52 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ .075 mg/LMay–Oct
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year
Mercury, total [as Hg]rolling average≤ 12 ng/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
Stream flow, estimateddaily minimum≥ 11 cfsMay–Oct
Stream flow, estimateddaily minimum≥ 11 cfsJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 110 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % removaldaily minimum≥ 85 %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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0023591 · MCP: https://passage-data.com/mcp