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Tri-Town Water District 1

Industrial or other facility, Addison, Vermont. NPDES permit VT0000680 expired Mar 31, 2021; its limits still apply. Last 12 months: over a limit once (last December 2025), 6 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 (6 values)
Last report on file: July 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 2 of 12 reports late

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

Period ending	Parameter	Reported	Limit	Over by
December 2025	Solids, total suspended, daily maximum	14	≤ 10 mg/L	40%

Limits in force (7)

Parameter	Statistic	Limit	Months
Turbidity	monthly average	≤ 10 NTU	Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Turbidity	monthly average	≤ 25 NTU	Jun–Sep
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 8.5 SU	all year
Solids, total suspended	daily maximum	≤ 10 mg/L	all year
Flow, in conduit or thru treatment plant	monthly average	≤ 160000 gal/d	all year
Chlorine, total residual	daily maximum	≤ 1 mg/L	all year

How strict are these limits?

Turbidity, monthly average 10 NTU — stricter than 74% of 75 other minor industrial and other permits nationwide; 21% have the same limit
Solids, total suspended, daily maximum 10 mg/L — stricter than 54% of 24 other minor industrial and other permits in Vermont; 46% have the same limit

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/VT0000680 · MCP: https://passage-data.com/mcp