CONSTELLATION ENERGY GENERATION LLC

NPDES permit PA0051926 · Major NON-POTW · effective, expires 2031-04-30 · 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
209required values missing, on 20 form(s)
0of 135 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among PA permits in EPA's filings — check your permit).

Limits in force (195)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Temperature, water deg. fahrenheitINST MAX <= 110 deg F all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 60 mg/L all year
001Chromium, total [as Cr]MO AVG <= .2 mg/L all year
001Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, total [as Fe]MO AVG report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Lead, total [as Pb]MO AVG report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Zinc, total [as Zn]MO AVG <= 1 mg/L all year
001Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
001Aluminum, total [as Al]MO AVG <= 4.97 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 7.75 mg/L all year
001Oxidants, total residualDAILY MX <= .2 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001AcrylamideQRTR AVG report only all year
001AcrylamideDAILY MX report only all year
001Perfluorooctanoic acid (PFOA)DAILY MX report only all year
001PerfluorooctanesulfonateDAILY MX report only all year
001PCBs Wet Weather AnalysisDAILY MX report only all year
001PCBs Dry Weather AnalysisDAILY MX report only all year
001Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
001Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
001Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only all year
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX report only all year
001Solids, total dissolvedMO AVG report only all year
001Solids, total dissolvedDAILY MX report only all year
001Bromide [as Br]QRTR AVG report only all year
001Bromide [as Br]DAILY MX report only all year
001Coliform, fecal generalQRTR AVG report only all year
001Coliform, fecal generalDAILY MX report only all year
001TU Static 7Day Chronic Ceriodaphnia dubiaDAILY MX report only all year
001Static 7Day Chronic Pimephales PromelasDAILY MX report only all year
002pHDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Oil & GreaseDAILY MX report only all year
002Nitrogen, total [as N]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Copper, total [as Cu]DAILY MX report only all year
002Iron, total [as Fe]DAILY MX report only all year
002Zinc, total [as Zn]DAILY MX report only all year
003Temperature, water deg. fahrenheitINST MAX <= 110 deg F all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003Solids, total suspendedMO AVG report only all year
003Solids, total suspendedDAILY MX report only all year
003Oxidants, total residualDAILY MX <= .2 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
005Temperature, water deg. fahrenheitINST MAX <= 110 deg F all year
005pHINST MIN >= 6 SU all year
005pHINST MAX <= 9 SU all year
005Solids, total suspendedMO AVG report only all year
005Solids, total suspendedDAILY MX report only all year
005Oxidants, total residualDAILY MX <= .2 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
008pHDAILY MX report only all year
008Solids, total suspendedDAILY MX report only all year
008Oil & GreaseDAILY MX report only all year
008Nitrogen, total [as N]DAILY MX report only all year
008Phosphorus, total [as P]DAILY MX report only all year
008Copper, total [as Cu]DAILY MX report only all year
008Iron, total [as Fe]DAILY MX report only all year
008Zinc, total [as Zn]DAILY MX report only all year
012pHINST MIN report only all year
012pHINST MAX report only all year
012Solids, total suspendedMO AVG report only all year
012Solids, total suspendedDAILY MX <= 100 mg/L all year
012Oil & GreaseMO AVG report only all year
012Oil & GreaseDAILY MX report only all year
012Iron, total [as Fe]MO AVG report only all year
012Iron, total [as Fe]DAILY MX <= 7 mg/L all year
012Iron, dissolved [as Fe]MO AVG report only all year
012Iron, dissolved [as Fe]DAILY MX report only all year
012Flow, in conduit or thru treatment plantMO AVG report only all year
012Flow, in conduit or thru treatment plantDAILY MX report only all year
019pHDAILY MX report only all year
019Solids, total suspendedDAILY MX report only all year
019Oil & GreaseDAILY MX report only all year
019Nitrogen, total [as N]DAILY MX report only all year
019Phosphorus, total [as P]DAILY MX report only all year
019Copper, total [as Cu]DAILY MX report only all year
019Iron, total [as Fe]DAILY MX report only all year
019Zinc, total [as Zn]DAILY MX report only all year
020pHINST MIN >= 6 SU all year
020pHINST MAX <= 9 SU all year
020Solids, total suspendedMO AVG report only all year
020Solids, total suspendedDAILY MX <= 100 mg/L all year
020Flow, in conduit or thru treatment plantMO AVG report only all year
020Flow, in conduit or thru treatment plantDAILY MX report only all year
021BOD, 5-day, 20 deg. CDAILY MX report only all year
021BOD, 5-day, 20 deg. CDAILY MX report only all year
021Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
021Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
021pHDAILY MX report only all year
021pHDAILY MX report only all year
021Solids, total suspendedDAILY MX report only all year
021Solids, total suspendedDAILY MX report only all year
021Oil & GreaseDAILY MX report only all year
021Oil & GreaseDAILY MX report only all year
021Nitrogen, total [as N]DAILY MX report only all year
021Nitrogen, total [as N]DAILY MX report only all year
021Phosphorus, total [as P]DAILY MX report only all year
021Phosphorus, total [as P]DAILY MX report only all year
021Copper, total [as Cu]DAILY MX report only all year
021Copper, total [as Cu]DAILY MX report only all year
021Iron, total [as Fe]DAILY MX report only all year
021Iron, total [as Fe]DAILY MX report only all year
021Zinc, total [as Zn]DAILY MX report only all year
021Zinc, total [as Zn]DAILY MX report only all year
024pHDAILY MX report only all year
024Solids, total suspendedMO AVG <= 30 mg/L all year
024Solids, total suspendedDAILY MX <= 100 mg/L all year
024Oil & GreaseMO AVG <= 15 mg/L all year
024Oil & GreaseDAILY MX <= 20 mg/L all year
024Copper, total [as Cu]MO AVG report only all year
024Copper, total [as Cu]DAILY MX report only all year
024AcrylamideMO AVG report only all year
024AcrylamideDAILY MX report only all year
024Solids, total dissolvedMO AVG report only all year
024Solids, total dissolvedDAILY MX report only all year
030pHDAILY MX report only all year
030Solids, total suspendedDAILY MX report only all year
030Oil & GreaseDAILY MX report only all year
030Nitrogen, total [as N]DAILY MX report only all year
030Phosphorus, total [as P]MO AVG report only all year
030Phosphorus, total [as P]DAILY MX report only all year
030Phosphorus, total [as P]DAILY MX report only all year
030Copper, total [as Cu]DAILY MX report only all year
030Iron, total [as Fe]DAILY MX report only all year
030Zinc, total [as Zn]DAILY MX report only all year
030Solids, total dissolvedMO AVG report only all year
030Solids, total dissolvedDAILY MX report only all year
031Temperature, water deg. fahrenheitMO AVG report only all year
031Temperature, water deg. fahrenheitDAILY MX report only all year
031Temperature, water deg. fahrenheitINST MAX <= 110 deg F all year
031pHINST MIN >= 6 SU all year
031pHINST MAX <= 9 SU all year
031Solids, total suspendedMO AVG report only all year
031Solids, total suspendedDAILY MX report only all year
031Solids, total suspendedMO AVG report only all year
031Solids, total suspendedDAILY MX report only all year
031Solids, total suspendedMO AVG <= 30 mg/L all year
031Solids, total suspendedDAILY MX <= 60 mg/L all year
031Chromium, total [as Cr]MO AVG <= .2 mg/L all year
031Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
031Copper, total [as Cu]MO AVG report only all year
031Copper, total [as Cu]DAILY MX report only all year
031Iron, total [as Fe]MO AVG report only all year
031Iron, total [as Fe]DAILY MX report only all year
031Lead, total [as Pb]MO AVG report only all year
031Lead, total [as Pb]DAILY MX report only all year
031Zinc, total [as Zn]MO AVG <= 1 mg/L all year
031Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
031Aluminum, total [as Al]MO AVG <= 4.97 mg/L all year
031Aluminum, total [as Al]DAILY MX <= 7.75 mg/L all year
031Oxidants, total residualDAILY MX <= .2 mg/L all year
031Flow, in conduit or thru treatment plantMO AVG report only all year
031Flow, in conduit or thru treatment plantDAILY MX report only all year
031AcrylamideMO AVG report only all year
031AcrylamideDAILY MX report only all year
031Solids, total dissolvedMO AVG report only all year
031Solids, total dissolvedDAILY MX report only all year
031Bromide [as Br]MO AVG report only all year
031Bromide [as Br]DAILY MX report only all year
031Coliform, fecal generalMO AVG report only all year
031Coliform, fecal generalDAILY MX report only all year
201Solids, total suspendedMO AVG <= 30 mg/L all year
201Solids, total suspendedDAILY MX <= 100 mg/L all year
201Oil & GreaseMO AVG <= 15 mg/L all year
201Oil & GreaseDAILY MX <= 20 mg/L all year
201Flow, in conduit or thru treatment plantMO AVG report only all year
201Flow, in conduit or thru treatment plantDAILY MX report only all year
301Solids, total suspendedMO AVG <= 30 mg/L all year
301Solids, total suspendedDAILY MX <= 100 mg/L all year
301Oil & GreaseMO AVG <= 15 mg/L all year
301Oil & GreaseDAILY MX <= 20 mg/L all year
301Flow, in conduit or thru treatment plantMO AVG report only all year
301Flow, in conduit or thru treatment plantDAILY MX report only all year
401Phosphorus, total [as P]MO AVG report only all year
401Phosphorus, total [as P]DAILY MX report only all year
401Flow, in conduit or thru treatment plantMO AVG report only all year
401Flow, in conduit or thru treatment plantDAILY 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