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Oyster Bay SD

Sewage treatment plant, major discharger, Oyster Bay, New York. NPDES permit NY0021822, in force until Mar 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (26 values), outfall 001 form N monthly (15 values), outfall 001 form Q quarterly (4 values), outfall 002 form M monthly (3 values)
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 40 reports late

Limits in force (50)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspended7-day average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 450 lb/dall year001
Solids, total suspended7-day average≤ 680 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedmonthly averagereport only (lb/d)all year001
Solids, settleabledaily maximum≤ .3 mL/Lall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, total [as N]individual rolling average≤ 80 lb/dall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d) (alert, not enforceable)all year001
Nitrogen, total [as N]rolling average≤ 959 lb/d (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, nitrite total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, nitrite total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantdaily maximum≤ 1.8 MGDall year001
Chlorine, total residualdaily maximum≤ .143 mg/Lall year001
Enterococci30-day geometric mean≤ 35 #/100mLall year001
Enterococci30-day geometric meanreport only (#/100mL)all year001
Enterococcidaily maximumreport only (#/100mL)all year001
Enterococcidaily maximumreport only (#/100mL)all year001
Phosphorous, in total orthophosphatedaily maximumreport only (mg/L)all year001
Phosphorous, in total orthophosphatedaily maximumreport only (mg/L)all year001
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year001
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year001
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year001
Coliform, total generalmedian≤ 700 #/100mLall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 380 lb/dall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 600 lb/dall year001
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %all year001
pHminimum≥ 6 SUall year002
pHmaximum≤ 8.5 SUall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002

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/NY0021822 · MCP: https://passage-data.com/mcp