PRATT & WHITNEY AIRCRAFT CO.

NPDES permit CT0001406 · Minor NON-POTW · effective, expires 2028-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 15 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 29 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (43)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitINST MAX report only Jan, Apr, Jul, Oct
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Flow rateMO AVG report only all year
001pHINST MIN report only Jan, Apr, Jul, Oct
001pHINST MAX report only Jan, Apr, Jul, Oct
001Solids, total suspendedDAILY MX report only Jan, Apr, Jul, Oct
001Solids, total suspendedDAILY MX report only Jan, Apr, Jul, Oct
001Oil & GreaseINST MAX report only Jan, Apr, Jul, Oct
001Oil & GreaseINST MAX report only Jan, Apr, Jul, Oct
001Phosphorus, total [as P]DAILY MX report only Jul, Oct
001Phosphorus, total [as P]DAILY MX report only Jul, Oct
001Chromium, total [as Cr]DAILY MX report only Jul, Oct
001Chromium, total [as Cr]DAILY MX report only Jul, Oct
001Copper, total [as Cu]DAILY MX report only Jan, Apr, Jul, Oct
001Copper, total [as Cu]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Copper, total [as Cu]DAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total [as Cu]MO AVG <= 1.372 kg/d May, Jun, Jul, Aug, Sep, Oct
001Copper, total [as Cu]MO AVG <= 1.294 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total [as Cu]DAILY MX <= 2.069 kg/d May, Jun, Jul, Aug, Sep, Oct
001Copper, total [as Cu]DAILY MX <= 1.942 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Iron, total [as Fe]DAILY MX report only Jul, Oct
001Iron, total [as Fe]DAILY MX report only Jul, Oct
001Lead, total [as Pb]DAILY MX report only Jul, Oct
001Lead, total [as Pb]DAILY MX report only Jul, Oct
001Nickel, total [as Ni]DAILY MX report only Jul, Oct
001Nickel, total [as Ni]DAILY MX report only Jul, Oct
001Zinc, total [as Zn]DAILY MX report only Jul, Oct
001Zinc, total [as Zn]DAILY MX report only Jul, Oct
001Aluminum, total [as Al]DAILY MX report only Jul, Oct
001Aluminum, total [as Al]DAILY MX report only Jul, Oct
001Flow, maximum during 24 hr periodDAILY MX <= 35000000 gal/d May, Jun, Jul, Aug, Sep, Oct
001Flow, maximum during 24 hr periodDAILY MX <= 30000000 gal/d Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualINST MAX report only Jan, Apr, Jul, Oct
001Chlorine, total residualINST MAX report only Jan, Apr, Jul, Oct
001pH, maximumINST MAX <= 9 SU all year
001pH, minimumINST MIN >= 6 SU all year
001FlowDAILY MX report only Jan, Apr, Jul, Oct
001NOAEL Static 48Hr Acute D. pulexINST MIN >= 90 % Jul, Oct
001NOAEL Static 48Hr Acute Pimephales promelasINST MIN >= 90 % Jul, Oct
001NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaINST MIN report only Jul, Oct
001NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasINST MIN report only Jul, Oct
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaINST MIN report only Jul, Oct
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasINST MIN report only Jul, Oct

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states