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Lewisboro (T)

Sewage treatment plant, Goldens Bridge, New York. NPDES permit NY0065706, in force until Mar 31, 2029. Last 12 months: over a limit 2 times (last March 2026), 5 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (16 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026Nitrogen, ammonia, total [as NH3], daily maximum3.75 mg/L≤ 2.2 mg/L70%
March 2026Nitrogen, ammonia, total [as NH3], daily maximum7.52 mg/L≤ 2.2 mg/L242%

Limits in force (17)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 70 deg F (alert, not enforceable)all year
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendeddaily maximum≤ 10 mg/Lall year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Phosphorus, total [as P]monthly average≤ .5 mg/Lall year
Copper, total [as Cu]monthly averagereport only (mg/L)all year
Nitrogen, ammonia, total [as NH3]daily maximum≤ 1 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≤ .06 MGDall year
Chlorine, total residualdaily maximum≤ .03 mg/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/Lall year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % 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/NY0065706 · MCP: https://passage-data.com/mcp