WESTLAKE EPOXY, INC

NPDES permit IL0075205 · Minor NON-POTW · effective, expires 2030-07-31 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 30 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 (104)

OutfallParameterStatisticLimitMonths
004Temperature, water deg. fahrenheitMO MAX <= 63 deg F Jan, Feb, Mar, Dec
004Temperature, water deg. fahrenheitMO MAX <= 93 deg F Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
004pHMO MIN >= 6.5 SU all year
004pHMO MAX <= 9 SU all year
004Solids, total suspended30DA AVG <= 15 mg/L all year
004Solids, total suspendedDAILY MX <= 30 mg/L all year
004Zinc, total [as Zn]30DA AVG report only Jan, Apr, Jul, Oct
004Zinc, total [as Zn]DAILY MX report only Jan, Apr, Jul, Oct
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Perfluorooctanoic acid (PFOA)DAILY MX report only all year
004Perfluorobutanoic acid (PFBA)DAILY MX report only all year
004Perfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
004Perfluoropentanoic acid (PFPeA)DAILY MX report only all year
004Perfluorohexanoic acid (PFHxA)DAILY MX report only all year
004Perfluoroheptanoic acid (PFHpA)DAILY MX report only all year
004Perfluorononanoic acid (PFNA)DAILY MX report only all year
004Perfluorodecanoic acid (PFDA)DAILY MX report only all year
004Perfluoroundecanoic acid (PFUnA)DAILY MX report only all year
004Perfluorododecanoic acid (PFDoA)DAILY MX report only all year
004Perfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
004Perfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
004N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
004N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
004N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
004N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
004Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
004Perfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
004Perfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
004Perfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
004Perfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
0041H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
0041H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
0041H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
004Perfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
004Perfluorononanesulfonic acid (PFNS)DAILY MX report only all year
004Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
004Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
004Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
004Perfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
0044,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
004N-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
004N-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
004PFAS SumDAILY MX report only all year
0043-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
004Perfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
0049-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
00411-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
0043-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
004Perfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
0042H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)DAILY MX report only all year
005Temperature, water deg. fahrenheitMO MAX <= 63 deg F Jan, Feb, Mar, Dec
005Temperature, water deg. fahrenheitMO MAX <= 93 deg F Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
005pHMO MIN >= 6.5 SU all year
005pHMO MAX <= 9 SU all year
005Solids, total suspended30DA AVG <= 15 mg/L all year
005Solids, total suspendedDAILY MX <= 30 mg/L all year
005Copper, total [as Cu]30DA AVG report only all year
005Copper, total [as Cu]DAILY MX report only all year
005Zinc, total [as Zn]30DA AVG report only Jan, Apr, Jul, Oct
005Zinc, total [as Zn]DAILY MX report only Jan, Apr, Jul, Oct
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Perfluorooctanoic acid (PFOA)DAILY MX report only all year
005Perfluorobutanoic acid (PFBA)DAILY MX report only all year
005Perfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
005Perfluoropentanoic acid (PFPeA)DAILY MX report only all year
005Perfluorohexanoic acid (PFHxA)DAILY MX report only all year
005Perfluoroheptanoic acid (PFHpA)DAILY MX report only all year
005Perfluorononanoic acid (PFNA)DAILY MX report only all year
005Perfluorodecanoic acid (PFDA)DAILY MX report only all year
005Perfluoroundecanoic acid (PFUnA)DAILY MX report only all year
005Perfluorododecanoic acid (PFDoA)DAILY MX report only all year
005Perfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
005Perfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
005N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
005N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
005N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
005N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
005Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
005Perfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
005Perfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
005Perfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
005Perfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
0051H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
0051H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
0051H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
005Perfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
005Perfluorononanesulfonic acid (PFNS)DAILY MX report only all year
005Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
005Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
005Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
005Perfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
0054,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
005N-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
005N-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
005PFAS SumDAILY MX report only all year
0053-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
005Perfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
0059-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
00511-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
0053-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
005Perfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
0052H,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