MIDDLETOWN POWER LLC c/o EASTERN GENERATION LLC

NPDES permit CT0003883 · Major NON-POTW · administratively continued, expires 2006-03-18 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2006-03-18 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

1values over a limit
0required values missing, on 0 form(s)
0of 90 forms filed late

Last period with anything received: 2026-07-31. Most often over: Iron, total [as Fe] (1).

Reporting

Reports are due about 30 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (157)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitINST MAX <= 126 deg F all year
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Oxidants, total residualINST MAX <= .2 mg/L all year
001Flow, maximum during 24 hr periodDAILY MX <= 62591000 gal/d all year
001FlowMO AVG report only all year
001FlowDAILY MX <= 62591000 gal/d all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaAVERAGE report only Jan, Jul
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelasAVERAGE report only Jan, Jul
002Temperature, water deg. fahrenheitINST MAX <= 128 deg F all year
002Flow rateMO AVG report only all year
002Flow rateDAILY MX report only all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002Oxidants, total residualINST MAX <= .2 mg/L all year
002Flow, maximum during 24 hr periodDAILY MX <= 82900000 gal/d all year
002FlowMO AVG report only all year
002FlowDAILY MX <= 82900000 gal/d all year
002Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaAVERAGE report only Jan, Jul
002Pass/Fail Static Renewal 7Day Chronic Pimephales promelasAVERAGE report only Jan, Jul
003Temperature, water deg. fahrenheitINST MAX <= 129 deg F all year
003Flow rateMO AVG report only all year
003Flow rateDAILY MX report only all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003Oxidants, total residualINST MAX <= .2 mg/L all year
003Flow, maximum during 24 hr periodDAILY MX <= 146.9 MGD all year
003FlowMO AVG report only all year
003FlowDAILY MX <= 146.9 MGD all year
003Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaAVERAGE report only Jan, Jul
003Pass/Fail Static Renewal 7Day Chronic Pimephales promelasAVERAGE report only Jan, Jul
005Temperature, water deg. fahrenheitINST MAX report only all year
005Flow rateMO AVG <= 525000 gal/d all year
005Flow rateMO AVG <= 813000 gal/d all year
005pHINST MIN >= 6 SU all year
005pHINST MAX <= 9 SU all year
005Solids, total suspendedMO AVG <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 100 mg/L all year
005Oil & GreaseMO AVG <= 15 mg/L all year
005Oil & GreaseDAILY MX <= 20 mg/L all year
005Nitrogen, ammonia total [as N]MO AVG report only Jan, Apr, Jul, Oct
005Nitrogen, ammonia total [as N]DAILY MX report only Jan, Apr, Jul, Oct
005Arsenic, total [as As]MO AVG report only Jan, Apr, Jul, Oct
005Arsenic, total [as As]DAILY MX report only Jan, Apr, Jul, Oct
005Copper, total [as Cu]MO AVG <= .096 mg/L all year
005Copper, total [as Cu]DAILY MX <= .192 mg/L all year
005Iron, total [as Fe]MO AVG report only Jan, Apr, Jul, Oct
005Iron, total [as Fe]DAILY MX report only Jan, Apr, Jul, Oct
005Lead, total [as Pb]MO AVG <= .02 mg/L all year
005Lead, total [as Pb]DAILY MX <= .04 mg/L all year
005Nickel, total [as Ni]MO AVG report only Jan, Apr, Jul, Oct
005Nickel, total [as Ni]DAILY MX report only Jan, Apr, Jul, Oct
005Zinc, total [as Zn]MO AVG <= .631 mg/L all year
005Zinc, total [as Zn]DAILY MX <= 1.27 mg/L all year
005Oxidants, total residualINST MAX <= .2 mg/L all year
005Surfactants [MBAS]MO AVG report only Jan, Apr, Jul, Oct
005Surfactants [MBAS]DAILY MX report only Jan, Apr, Jul, Oct
005Flow, maximum during 24 hr periodDAILY MX report only all year
005HydrazineINST MAX report only Jan, Apr, Jul, Oct
005Pass/Fail Static 48Hr Acute D. PulexAVERAGE report only Jan, Apr, Jul, Oct
005Pass/Fail Static 96 Hr Acute Pimephales PromelasAVERAGE report only Jan, Apr, Jul, Oct
018Flow rateMO AVG <= 100000 gal/d all year
018pHINST MIN >= 6 SU all year
018pHINST MAX <= 9 SU all year
018Solids, total suspendedMO AVG <= 20 mg/L all year
018Solids, total suspendedDAILY MX <= 30 mg/L all year
018Flow, maximum during 24 hr periodDAILY MX <= 720000 gal/d all year
019Flow rateMO AVG <= 1000000 gal/d all year
019Flow rateDAILY MX report only all year
019pHINST MIN >= 6 SU all year
019pHINST MAX <= 9 SU all year
019Solids, total suspendedMO AVG <= 20 mg/L all year
019Solids, total suspendedDAILY MX <= 30 mg/L all year
019Oil & GreaseMO AVG <= 10 mg/L all year
019Oil & GreaseDAILY MX <= 15 mg/L all year
019Nitrogen, ammonia total [as N]MO AVG <= 23.4 mg/L all year
019Nitrogen, ammonia total [as N]DAILY MX <= 47 mg/L all year
019Nitrogen, ammonia total [as N]DAILY MX report only Jan, Apr, Jul, Oct
019Nitrogen, nitrite total [as N]MO AVG report only all year
019Nitrogen, nitrite total [as N]DAILY MX report only all year
019Nitrogen, nitrite total [as N]DAILY MX report only Jan, Apr, Jul, Oct
019Nitrogen, nitrate total [as N]MO AVG report only all year
019Nitrogen, nitrate total [as N]DAILY MX report only all year
019Nitrogen, nitrate total [as N]DAILY MX report only Jan, Apr, Jul, Oct
019Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
019Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
019Nitrogen, Kjeldahl, total [as N]DAILY MX report only Jan, Apr, Jul, Oct
019Fluoride, total [as F]DAILY MX report only Jan, Apr, Jul, Oct
019Fluoride, total [as F]DAILY MX report only Jan, Apr, Jul, Oct
019Arsenic, total [as As]MO AVG <= 18.9 g/d all year
019Arsenic, total [as As]DAILY MX <= 37.8 g/d all year
019Arsenic, total [as As]DAILY MX report only Jan, Apr, Jul, Oct
019Cadmium, total [as Cd]MO AVG report only Jan, Apr, Jul, Oct
019Cadmium, total [as Cd]DAILY MX report only Jan, Apr, Jul, Oct
019Cadmium, total [as Cd]DAILY MX report only Jan, Apr, Jul, Oct
019Chromium, total [as Cr]DAILY MX report only Jan, Apr, Jul, Oct
019Chromium, total [as Cr]DAILY MX report only Jan, Apr, Jul, Oct
019Copper, total [as Cu]MO AVG <= 1 mg/L all year
019Copper, total [as Cu]DAILY MX <= 1 mg/L all year
019Copper, total [as Cu]MO AVG <= 362 g/d all year
019Copper, total [as Cu]DAILY MX <= 727 g/d all year
019Copper, total [as Cu]DAILY MX report only Jan, Apr, Jul, Oct
019Iron, total [as Fe]MO AVG <= 1 mg/L all year
019Iron, total [as Fe]DAILY MX <= 1 mg/L all year
019Iron, total [as Fe]DAILY MX report only Jan, Apr, Jul, Oct
019Lead, total [as Pb]MO AVG <= .1 mg/L all year
019Lead, total [as Pb]DAILY MX <= .5 mg/L all year
019Lead, total [as Pb]MO AVG <= 74.1 g/d all year
019Lead, total [as Pb]DAILY MX <= 149 g/d all year
019Lead, total [as Pb]DAILY MX report only Jan, Apr, Jul, Oct
019Nickel, total [as Ni]MO AVG report only all year
019Nickel, total [as Ni]DAILY MX report only all year
019Nickel, total [as Ni]DAILY MX report only Jan, Apr, Jul, Oct
019Vanadium, total [as V]MO AVG report only all year
019Vanadium, total [as V]DAILY MX report only all year
019Vanadium, total [as V]DAILY MX report only Jan, Apr, Jul, Oct
019Zinc, total [as Zn]MO AVG <= 1 mg/L all year
019Zinc, total [as Zn]DAILY MX <= 2 mg/L all year
019Zinc, total [as Zn]MO AVG <= 2392 g/d all year
019Zinc, total [as Zn]DAILY MX <= 4809 g/d all year
019Zinc, total [as Zn]DAILY MX report only Jan, Apr, Jul, Oct
019Aluminum, total [as Al]MO AVG <= 2 mg/L all year
019Aluminum, total [as Al]DAILY MX <= 4 mg/L all year
019Aluminum, total [as Al]DAILY MX report only Jan, Apr, Jul, Oct
019Oxidants, total residualINST MAX <= .2 ug/L all year
019Flow, maximum during 24 hr periodDAILY MX <= 1584000 gal/d all year
019Chlorine, total residualDAILY MX report only Jan, Apr, Jul, Oct
019Mercury, total [as Hg]MO AVG report only Jan, Apr, Jul, Oct
019Mercury, total [as Hg]DAILY MX report only Jan, Apr, Jul, Oct
019Mercury, total [as Hg]DAILY MX report only Jan, Apr, Jul, Oct
019FlowMO AVG <= 1000000 gal/d all year
019FlowDAILY MX <= 1584000 gal/d all year
019HydrazineINST MAX report only all year
019HydrazineDAILY MX report only Jan, Apr, Jul, Oct
019Pass/Fail Static 48Hr Acute D. PulexAVERAGE report only Jan, Apr, Jul, Oct
019Pass/Fail Static 96 Hr Acute Pimephales PromelasAVERAGE report only Jan, Apr, Jul, Oct
020pHINST MIN >= 6 SU Jan, Jul
020pHINST MAX <= 9 SU Jan, Jul
020Oil & GreaseINST MAX <= 10 mg/L Jan, Jul
023Temperature, water deg. fahrenheitINST MAX report only all year
023Flow rateMO AVG <= 1000000 gal/d all year
023Flow rateDAILY MX report only all year
023pHINST MIN >= 6 SU all year
023pHINST MAX <= 9 SU all year
023Copper, total [as Cu]MO AVG <= 1 mg/L all year
023Copper, total [as Cu]DAILY MX <= 2 mg/L all year
023Zinc, total [as Zn]MO AVG <= 1 mg/L all year
023Zinc, total [as Zn]DAILY MX <= 2 mg/L all year
023Oxidants, total residualINST MAX <= .2 mg/L all year
023Flow, maximum during 24 hr periodDAILY MX <= 1152000 gal/d all year
023FlowMO AVG <= 1000000 gal/d all year
023FlowDAILY MX <= 1152000 gal/d all year
123Temperature, water deg. fahrenheitINST MAX report only all year
123Flow rateMO AVG report only all year
123Flow, maximum during 24 hr periodDAILY MX report only all year

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