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Dutchess Co Water & Wastewater Authority

Sewage treatment plant, Poughquag, New York. NPDES permit NY0214531, in force until May 31, 2029. Last 12 months: over a limit 5 times (last June 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (19 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 12 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
January 2026pH, maximum8.6 SU≤ 8.5 SU—
May 2026Oxygen, dissolved [DO], daily minimum6.8 mg/L≥ 7 mg/L3%
May 2026pH, maximum8.8 SU≤ 8.5 SU—
June 2026BOD, carbonaceous [5 day, 20 C], daily maximum6 mg/L≤ 5 mg/L20%
June 2026pH, maximum8.9 SU≤ 8.5 SU—

Limits in force (25)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 70 deg F (alert, not enforceable)all year
Oxygen demand, ultimatedaily maximum≤ 100 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Oxygen demand, ultimatedaily maximum≤ 180 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 10 mg/Lall year
Solids, total suspendedmonthly average≤ 18 lb/dall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]daily maximum≤ 2 mg/LJun–Oct
Flow, in conduit or thru treatment plantmonthly average≤ .216 MGDall year
Chlorine, total residualdaily maximum≤ .03 mg/Lall year
Chlorine, total residualdaily maximum≤ .1 mg/Lall year
Mercury, total recoverabledaily maximum≤ 50 ng/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/LJun–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 25 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 9 lb/dJun–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 45 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % 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 average3.7 mg/L (Jan, Feb, Mar, Apr, May, Nov, Dec)new——
Nitrogen, ammonia total [as N], monthly average1.8 mg/L (Jun–Oct)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/NY0214531 · MCP: https://passage-data.com/mcp