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Madrid (T)

Sewage treatment plant, Madrid, Town Of, New York. NPDES permit NY0024635 expired Sep 30, 2025; its limits still apply. Last 12 months: over a limit 3 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (9 values), form B monthly (3 values), form Q monthly (12 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 29 reports late

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

Period endingParameterReportedLimitOver by
March 2026Flow, in conduit or thru treatment plant, 30-day arithmetic mean.254 MGD≤ .125 MGD103%
May 2026Coliform, fecal general, 30-day geometric mean296 #/100mL≤ 200 #/100mL48%
May 2026Coliform, fecal general, 7-day geometric mean410 #/100mL≤ 400 #/100mL3%

Limits in force (24)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 32 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 47 lb/dall year
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 32 lb/dall year
Solids, total suspended7-day average≤ 47 lb/dall year
Solids, total suspended30-day averagereport only (mg/L)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Flow, in conduit or thru treatment plant30-day arithmetic mean≤ .125 MGDall year
Chlorine, total residualdaily maximum≤ 2 mg/LMay–Sep
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Sep
BOD, 5-day, percent removalmonthly minimum≥ 85 %all year
Solids, suspended percent removalmonthly 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/NY0024635 · MCP: https://passage-data.com/mcp