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Town of Windsor

Sewage treatment plant, major discharger, Windsor, Vermont. NPDES permit VT0100919 expired Sep 30, 2021; its limits still apply. Last 12 months: over a limit 2 times (last January 2026), 50 required values missing, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (20 values)
Last report on file
July 2026
Oct 2024 – Sep 2025
1 value over a limit, 12 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025E. coli, thermotol, MF, MTEC, instantaneous maximum2400≤ 77 #/100mL3017%
January 2026Chlorine, total residual, weekly average1.33≤ 1.1 mg/L21%

Limits in force (21)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 283 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 424 lb/dall year
BOD, 5-day, 20 deg. Cmonthly minimum≥ 85 %all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendeddaily maximum≤ 50 mg/Lall year
Solids, total suspendedmonthly average≤ 283 lb/dall year
Solids, total suspendedweekly average≤ 424 lb/dall year
Solids, total suspendedmonthly minimum≥ 85 %all year
Solids, settleableinstantaneous maximum≤ 1 mL/Lall year
Solids, settleablemonthly minimum≥ 85 %all year
Nitrogen, total [as N]annual average≤ 119 lb/dDec
E. coli, thermotol, MF, MTECinstantaneous maximum≤ 77 #/100mLall year
Flow, in conduit or thru treatment plantannual average≤ 1.13 MGDall year
Chlorine, total residualweekly average≤ 1.1 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ 2 mg/Lall year

How strict are these limits?

Cited limits by parameter: Vermont's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VT0100919 · MCP: https://passage-data.com/mcp