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Isovolta Inc

Industrial or other facility, Rutland, Vermont. NPDES permit VT0000442 expired Jun 30, 2019; its limits still apply. Last 12 months: over a limit 2 times (last June 2026), 8 required values missing, 10 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form A monthly (9 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 5 values over a limit, 16 required values missing, 12 of 12 reports late

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

Period ending	Parameter	Reported	Limit	Over by
June 2026	Solids, total suspended, daily maximum	37	≤ 20 mg/L	85%
June 2026	Solids, total suspended, monthly average	37	≤ 15 mg/L	147%

Limits in force (9)

Parameter	Statistic	Limit	Months
Turbidity	daily maximum	report only (NTU)	all year
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 8.5 SU	all year
Solids, total suspended	monthly average	≤ 15 mg/L	all year
Solids, total suspended	daily maximum	≤ 20 mg/L	all year
Solids, total suspended	monthly average	≤ 125 lb/d	all year
Solids, total suspended	daily maximum	≤ 167 lb/d	all year
Flow, in conduit or thru treatment plant	30-day average	≤ 1.5 MGD	all year
Flow, in conduit or thru treatment plant	daily maximum	≤ 1.75 MGD	all year

How strict are these limits?

Solids, total suspended, monthly average 15 mg/L — stricter than 77% of 10,872 other minor industrial and other permits nationwide; 4% have the same limit
Solids, total suspended, daily maximum 20 mg/L — stricter than 37% of 24 other minor industrial and other permits in Vermont

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/VT0000442 · MCP: https://passage-data.com/mcp