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United Aluminum

Aluminum Sheet, Plate, And Foil, North Haven, Connecticut. NPDES permit CT0030201 expired Jun 30, 2017; its limits still apply. Last 12 months: no values over a limit, 3 required values missing, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (18)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitinstantaneous maximum≤ 107 deg FJan, Apr, Jul, Oct
Flow ratemonthly average≤ 480000 gal/dJan, Apr, Jul, Oct
pHinstantaneous minimum≥ 6 SUJan, Apr, Jul, Oct
pHinstantaneous maximum≤ 9 SUJan, Apr, Jul, Oct
Oil & Greasedaily maximum≤ 5 mg/LJan, Jul
Copper, total [as Cu]daily maximum≤ .014 mg/LJan, Apr, Jul, Oct
Iron, total [as Fe]daily maximumreport only (mg/L)Jan, Apr, Jul, Oct
Lead, total [as Pb]daily maximumreport only (mg/L)Jan, Apr, Jul, Oct
Manganese, total [as Mn]daily maximumreport only (mg/L)Jan, Apr, Jul, Oct
Aluminum, total [as Al]daily maximumreport only (mg/L)Jan, Apr, Jul, Oct
Flow, maximum during 24 hr perioddaily maximum≤ 486000 gal/dJan, Apr, Jul, Oct
pH, maximuminstantaneous maximum≤ 9 SUJan, Apr, Jul, Oct
pH, minimuminstantaneous minimum≥ 6 SUJan, Apr, Jul, Oct
Flowdaily maximum≤ 486000 gal/dJan, Apr, Jul, Oct
NOAEL Static 48Hr Acute D. pulexinstantaneous minimum≥ 90 %Jan, Apr, Jul, Oct
NOAEL Static 48Hr Acute D. pulexinstantaneous minimumreport only (%)Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
NOAEL Static 48Hr Acute Pimephales promelasinstantaneous minimum≥ 90 %Jan, Apr, Jul, Oct
NOAEL Static 48Hr Acute Pimephales promelasinstantaneous minimumreport only (%)Feb, Mar, May, Jun, Aug, Sep, Nov, Dec

How strict are these limits?

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

Same industry: the 3 Primary Metal Industries permits in Connecticut.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CT0030201 · MCP: https://passage-data.com/mcp