CONSTELLATION ENERGY GENERATION LLC

NPDES permit IL0005037 · Major NON-POTW · effective, expires 2031-03-31 · 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)
3of 45 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among IL permits in EPA's filings — check your permit).

Limits in force (119)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Temperature, water deg. fahrenheitDAILY MX <= 68 deg F Nov
001Temperature, water deg. fahrenheitDAILY MX <= 78 deg F Oct
001Temperature, water deg. fahrenheitDAILY MX <= 88 deg F Jun, Sep
001Temperature, water deg. fahrenheitDAILY MX <= 48 deg F Jan, Feb
001Temperature, water deg. fahrenheitDAILY MX <= 60 deg F Mar
001Temperature, water deg. fahrenheitDAILY MX <= 71 deg F Apr
001Temperature, water deg. fahrenheitDAILY MX <= 89 deg F Jul, Aug
001Temperature, water deg. fahrenheitDAILY MX <= 55 deg F Dec
001Temperature, water deg. fahrenheitDAILY MX <= 81 deg F May
001Temperature, water deg. fahrenheitDAILY MX <= 5 deg F all year
001pHMO MIN >= 6 SU all year
001pHMO MAX <= 9 SU all year
001Zinc, total [as Zn]QRTR AVG report only Mar, Jun, Sep, Dec
001Zinc, total [as Zn]QB report only Mar, Jun, Sep, Dec
001Temperature, length of excursionMO TOTAL report only all year
001Temperature, length of excursionANNL TOT <= 219 hr/mo 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
001Chlorine, total residualDAILY MX <= .05 mg/L all year
A02Solids, total suspended30DA AVG <= 15 mg/L all year
A02Solids, total suspendedDAILY MX <= 30 mg/L all year
A02Boron, total [as B]DAILY MX report only all year
A02Oil and grease30DA AVG <= 15 mg/L Jan, Jul
A02Oil and greaseDAILY MX <= 20 mg/L Jan, Jul
A02Flow, in conduit or thru treatment plantMO AVG report only all year
A02Flow, in conduit or thru treatment plantDAILY MX report only all year
A02Perfluorooctanoic acid (PFOA)DAILY MX report only all year
A02Perfluorobutanoic acid (PFBA)DAILY MX report only all year
A02Perfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
A02Perfluoropentanoic acid (PFPeA)DAILY MX report only all year
A02Perfluorohexanoic acid (PFHxA)DAILY MX report only all year
A02Perfluoroheptanoic acid (PFHpA)DAILY MX report only all year
A02Perfluorononanoic acid (PFNA)DAILY MX report only all year
A02Perfluorodecanoic acid (PFDA)DAILY MX report only all year
A02Perfluoroundecanoic acid (PFUnA)DAILY MX report only all year
A02Perfluorododecanoic acid (PFDoA)DAILY MX report only all year
A02Perfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
A02Perfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
A02N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
A02N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
A02N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
A02N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
A02Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
A02Perfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
A02Perfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
A02Perfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
A02Perfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
A021H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
A021H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
A021H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
A02Perfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
A02Perfluorononanesulfonic acid (PFNS)DAILY MX report only all year
A02Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
A02Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
A02Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
A02Perfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
A024,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
A02N-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
A02N-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
A02PFAS SumDAILY MX report only all year
A023-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
A02Perfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
A029-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
A0211-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
A023-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
A02Perfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
A022H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)DAILY MX report only all year
B01Solids, total suspended30DA AVG <= 15 mg/L all year
B01Solids, total suspendedDAILY MX <= 30 mg/L all year
B01Solids, total suspended30DA AVG <= 19 lb/d all year
B01Solids, total suspendedDAILY MX <= 39 lb/d all year
B01Oil and grease30DA AVG <= 15 mg/L all year
B01Oil and greaseDAILY MX <= 20 mg/L all year
B01Oil and grease30DA AVG <= 19 lb/d all year
B01Oil and greaseDAILY MX <= 26 lb/d all year
B01Flow, in conduit or thru treatment plantMO AVG report only all year
B01Flow, in conduit or thru treatment plantDAILY MX report only all year
B01Perfluorooctanoic acid (PFOA)DAILY MX report only all year
B01Perfluorobutanoic acid (PFBA)DAILY MX report only all year
B01Perfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
B01Perfluoropentanoic acid (PFPeA)DAILY MX report only all year
B01Perfluorohexanoic acid (PFHxA)DAILY MX report only all year
B01Perfluoroheptanoic acid (PFHpA)DAILY MX report only all year
B01Perfluorononanoic acid (PFNA)DAILY MX report only all year
B01Perfluorodecanoic acid (PFDA)DAILY MX report only all year
B01Perfluoroundecanoic acid (PFUnA)DAILY MX report only all year
B01Perfluorododecanoic acid (PFDoA)DAILY MX report only all year
B01Perfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
B01Perfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
B01N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
B01N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
B01N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
B01N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
B01Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
B01Perfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
B01Perfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
B01Perfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
B01Perfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
B011H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
B011H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
B011H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
B01Perfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
B01Perfluorononanesulfonic acid (PFNS)DAILY MX report only all year
B01Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
B01Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
B01Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
B01Perfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
B014,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
B01N-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
B01N-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
B01PFAS SumDAILY MX report only all year
B013-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
B01Perfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
B019-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
B0111-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
B013-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
B01Perfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
B012H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)DAILY 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