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Carmel (T)

Sewage treatment plant, Mahopac, New York. NPDES permit NY0029017, in force until Sep 30, 2027. Last 12 months: over a limit 5 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (24 values)
Renewal application due
Apr 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
March 2026Flow rate, monthly average.0466 MGD≤ .0465 MGD0%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum13 mg/L≤ 5 mg/L160%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum6.9 lb/d≤ 1.94 lb/d256%
July 2026Flow rate, monthly average.0556 MGD≤ .0465 MGD20%
August 2026Flow rate, monthly average.0636 MGD≤ .0465 MGD37%

Limits in force (33)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Flow rate30-day arithmetic mean≤ 46500 gal/dall year
Flow ratemonthly average≤ .0465 MGDall year
Turbidityinstantaneous maximum≤ 5 NTUall year
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall 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, total suspendeddaily maximum≤ 10 mg/Lall year
Solids, total suspendeddaily maximum≤ 3.89 lb/dall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 1.5 mg/LJun–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 2.2 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Phosphorus, total [as P]30-day average≤ 1 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Chlorine, total residualdaily maximum≤ .1 mg/Lall year
Chlorine, total residualdaily maximum≤ .03 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, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 1.94 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)all 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/NY0029017 · MCP: https://passage-data.com/mcp