Nucor Steel Connecticut, Inc.

NPDES permit CT0026794 · Minor NON-POTW · administratively continued, expires 2026-07-31 · 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.

This permit expired on 2026-07-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
1of 11 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (56)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitINST MAX report only all year
001Flow rateMO AVG <= 30000 gal/d all year
001ConductivityINST MAX report only all year
001BOD, 5-day, 20 deg. CDAILY MX <= 15 mg/L Feb, May, Aug, Nov
001BOD, 5-day, 20 deg. CDAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 2.271 kg/d all year
001Solids, total suspendedDAILY MX <= 3.406 kg/d all year
001Oil & GreaseMO AVG <= 10 mg/L all year
001Oil & GreaseDAILY MX report only all year
001Oil & GreaseMO AVG <= 1.135 kg/d all year
001Oil & GreaseDAILY MX report only all year
001Cadmium, total [as Cd]MO AVG <= .007 mg/L Feb, May, Aug, Nov
001Cadmium, total [as Cd]MO AVG report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Cadmium, total [as Cd]DAILY MX <= .014 mg/L Feb, May, Aug, Nov
001Cadmium, total [as Cd]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Chromium, total [as Cr]MO AVG <= 1 mg/L Feb, May, Aug, Nov
001Chromium, total [as Cr]MO AVG report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Chromium, total [as Cr]DAILY MX <= 2 mg/L Feb, May, Aug, Nov
001Chromium, total [as Cr]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Copper, total [as Cu]MO AVG <= .32 mg/L all year
001Copper, total [as Cu]DAILY MX <= .65 mg/L all year
001Iron, total [as Fe]MO AVG <= 3 mg/L Feb, May, Aug, Nov
001Iron, total [as Fe]MO AVG report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Iron, total [as Fe]DAILY MX <= 5 mg/L Feb, May, Aug, Nov
001Iron, total [as Fe]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Lead, total [as Pb]MO AVG <= .069 mg/L all year
001Lead, total [as Pb]DAILY MX <= .138 mg/L all year
001Nickel, total [as Ni]MO AVG <= 1 mg/L all year
001Nickel, total [as Ni]DAILY MX <= 2 mg/L all year
001Zinc, total [as Zn]MO AVG <= .72 mg/L all year
001Zinc, total [as Zn]DAILY MX <= 1.73 mg/L all year
001Aluminum, total [as Al]MO AVG <= 1.48 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 3.99 mg/L all year
001Aluminum, total [as Al]MO AVG <= .168 kg/d all year
001Aluminum, total [as Al]DAILY MX <= .453 kg/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only Feb, May, Aug, Nov
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Flow, maximum during 24 hr periodDAILY MX <= 50000 gal/d all year
001Chlorine, total residualMO AVG <= .048 mg/L all year
001Chlorine, total residualDAILY MX <= .144 mg/L all year
001Chlorine, total residualMO AVG <= 5.5 g/d all year
001Chlorine, total residualDAILY MX <= 16.3 g/d all year
001E. coliINST MAX report only Feb, May, Aug, Nov
001pH, maximumINST MAX <= 9 SU all year
001pH, minimumINST MIN >= 6 SU all year
001FlowDAILY MX <= 50000 gal/d all year
001NOEC Static Renewal 7Day Chronic Ceriodaphnia dubiaINST MIN report only Jul, Aug, Sep
001NOEC Static Renewal 7Day Chronic Pimephales promelasINST MIN report only Jul, Aug, Sep
001NOAEL Static 48Hr Acute D. pulexINST MIN >= 36 % Feb, May, Aug, Nov
001NOAEL Static 48Hr Acute D. pulexINST MIN report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001NOAEL Static 48Hr Acute Pimephales promelasINST MIN report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001NOAEL Static 48Hr Acute Pimephales promelasINST MIN >= 36 % Feb, May, Aug, Nov

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