CONSTELLATION ENERGY GENERATION LLC

NPDES permit PA0009741 · Minor NON-POTW · effective, expires 2031-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit
0required values missing, on 0 form(s)
0of 40 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 (40)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG <= 110 deg F all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedDAILY MX report only all year
001Oil & GreaseMO AVG <= 15 mg/L all year
001Oil & GreaseINST MAX <= 30 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
001Chlorine, total residualMO AVG <= .5 mg/L all year
001Chlorine, total residualINST MAX <= 1.6 mg/L all year
001Perfluorooctanoic acid (PFOA)DAILY MX report only all year
001PerfluorooctanesulfonateDAILY 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
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 9 SU all year
004Solids, total suspendedDAILY MX report only all year
004Oil & GreaseMO AVG <= 15 mg/L all year
004Oil & GreaseINST MAX <= 30 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Chlorine, total residualMO AVG <= .5 mg/L all year
004Chlorine, total residualINST MAX <= 1.6 mg/L all year
004Perfluorooctanoic acid (PFOA)DAILY MX report only all year
004PerfluorooctanesulfonateDAILY MX report only all year
004Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
004Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
401Solids, total suspendedMO AVG <= 30 mg/L all year
401Solids, total suspendedINST MAX <= 60 mg/L 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
401E. coliINST MAX report only all year
401Coliform, fecal generalGEO MEAN <= 200 #/100mL May, Jun, Jul, Aug, Sep
401Coliform, fecal generalGEO MEAN <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
401Coliform, fecal generalINST MAX <= 1000 #/100mL May, Jun, Jul, Aug, Sep
401Coliform, fecal generalINST MAX <= 10000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
401BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
401BOD, carbonaceous [5 day, 20 C]INST MAX <= 50 mg/L 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