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North Salem (T)

Sewage treatment plant, Southeast, Town Of, New York. NPDES permit NY0274526, in force until Oct 31, 2029. Last 12 months: over a limit once (last June 2026), 5 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (27 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
June 2026BOD, 5-day, 20 deg. C, daily maximum5.7 mg/L≤ 5 mg/L14%

Limits in force (28)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Turbidityinstantaneous maximum≤ 5 NTUall year
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 5 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 7.1 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendeddaily maximum≤ 10 mg/Lall year
Solids, total suspendeddaily maximum≤ 14.2 lb/dall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Phosphorus, total [as P]monthly average≤ .2 mg/Lall year
Phosphorus, total [as P]12-month average≤ 25 kg/yrall year
Nitrogen, ammonia, total [as NH3]daily maximum≤ 1.5 mg/LJun–Oct
Nitrogen, ammonia, total [as NH3]daily maximum≤ 2.2 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Flow, in conduit or thru treatment plantmonthly average≤ .17 MGDall year
Chlorine, total residualdaily maximum≤ .1 mg/Lall year
Chlorine, total residualminimum≥ .2 mg/Lall year
Turbidity, time above limitmaximum≤ 2160 minall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average 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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0274526 · MCP: https://passage-data.com/mcp