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Silo Ridge Sewage Works Corporation

Services, Amenia, New York. NPDES permit NY0234966 expired Feb 28, 2021; its limits still apply. Last 12 months: over a limit once (last March 2026), 4 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (14 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
12 values over a limit, 2 required values missing, 4 of 12 reports late

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

Period endingParameterReportedLimitOver by
March 2026Solids, suspended percent removal, monthly average minimum78 %≥ 85 %47%

Limits in force (15)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 70 deg F (alert, not enforceable)all year
Flow ratemonthly average≤ 137348 gal/dall 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 maximumreport only (mg/L)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Nitrogen, total [as N]daily maximum≤ 10 mg/Lall year
Nitrogen, ammonia, total [as NH3]daily maximum≤ .23 mg/LMay–Sep
Nitrogen, ammonia, total [as NH3]daily maximum≤ .45 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)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.

Same industry: the 180 Miscellaneous Services permits in New York.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0234966 · MCP: https://passage-data.com/mcp