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Copenhagen (V)

Sewage treatment plant, Copenhagen, New York. NPDES permit NY0257711, in force until Jan 31, 2030. Last 12 months: over a limit 6 times (last June 2026), 1 required value missing, 2 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (31 values), outfall 001 form Q quarterly (1 value), outfall 01A form Q quarterly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 0 of 21 reports late

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

Period endingParameterReportedLimitOver by
March 2026Flow, in conduit or thru treatment plant, monthly average.245 MGD≤ .15 MGD63%
April 2026Flow, in conduit or thru treatment plant, monthly average.176 MGD≤ .15 MGD17%
June 2026Solids, suspended percent removal, monthly average minimum9 %≥ 65 %160%
June 2026Solids, total suspended, 7-day average77 mg/L≤ 45 mg/L71%
June 2026Solids, total suspended, monthly average44 lb/d≤ 37.5 lb/d17%
June 2026Solids, total suspended, monthly average77 mg/L≤ 30 mg/L157%

Limits in force (36)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 37.5 lb/dall year001
BOD, 5-day, 20 deg. C7-day average≤ 56.3 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. C7-day averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year001
BOD, 5-day, 20 deg. C7-day averagereport only (lb/d)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
pHminimumreport only (SU)all year001
pHmaximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspended7-day average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 37.5 lb/dall year001
Solids, total suspended7-day average≤ 56.3 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspended7-day averagereport only (mg/L)all year001
Solids, total suspendedmonthly averagereport only (lb/d)all year001
Solids, total suspended7-day averagereport only (lb/d)all year001
Solids, settleabledaily maximum≤ .3 mL/Lall year001
Solids, settleabledaily maximumreport only (mL/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly average≤ .15 MGDall year001
Chlorine, total residualdaily maximum≤ .05 mg/LMay–Oct001
Chlorine, total residualdaily maximum≤ .08 lb/dMay–Oct001
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct001
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct001
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year001
Solids, suspended percent removalmonthly average minimum≥ 65 %all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year01A
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year01A
Chloride [as Cl]daily maximumreport only (mg/L)all year01A
Coliform, fecal generaldaily maximumreport only (#/100mL)all year01A

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/NY0257711 · MCP: https://passage-data.com/mcp