UNITED STATES STEEL CORPORATION - GRANITE CITY WORKS

NPDES permit IL0000329 · Major NON-POTW · effective, expires 2031-06-30 · 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 35 forms filed late

Last period with anything received: 2026-07-31.

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 (125)

OutfallParameterStatisticLimitMonths
001pHMO MIN >= 6 SU all year
001pHMO MAX <= 9 SU all year
001Solids, total suspended30DA AVG <= 12 mg/L all year
001Solids, total suspendedDAILY MX <= 24 mg/L all year
001Solids, total suspended30DA AVG <= 2502 lb/d all year
001Solids, total suspendedDAILY MX <= 5004 lb/d all year
001Oil & Grease30DA AVG <= 15 mg/L all year
001Oil & GreaseDAILY MX <= 30 mg/L all year
001Oil & Grease30DA AVG <= 1511 lb/d all year
001Oil & GreaseDAILY MX <= 3492 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 3.3 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 2.5 mg/L Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 2.3 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 4 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 5.7 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 12.4 mg/L Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 5.7 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 688 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 521 lb/d Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 479 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 834 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 1188 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 2585 lb/d Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 3128 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 1188 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 5.7 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 6.2 mg/L Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 1188 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 1292 lb/d Apr, May, Sep, Oct
001Phosphorus, total [as P]QB report only Jan, Apr, Jul, Oct
001Cyanide, weak acid, dissociable30DA AVG <= .0052 mg/L all year
001Cyanide, weak acid, dissociableDAILY MX <= .022 mg/L all year
001Cyanide, weak acid, dissociable30DA AVG <= 1.1 lb/d all year
001Cyanide, weak acid, dissociableDAILY MX <= 4.6 lb/d all year
001Cyanide, total [as CN]30DA AVG <= .1 mg/L all year
001Cyanide, total [as CN]DAILY MX <= .2 mg/L all year
001Cyanide, total [as CN]30DA AVG <= 19 lb/d all year
001Cyanide, total [as CN]DAILY MX <= 35 lb/d all year
001Fluoride, total [as F]DAILY MX <= 4 mg/L all year
001Fluoride, total [as F]DAILY MX <= 834 lb/d all year
001Arsenic, total [as As]DAILY MX report only all year
001Barium, total [as Ba]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, total [as Fe]30DA AVG <= 2 mg/L all year
001Iron, total [as Fe]DAILY MX <= 4 mg/L all year
001Iron, total [as Fe]30DA AVG <= 417 lb/d all year
001Iron, total [as Fe]DAILY MX <= 834 lb/d all year
001Iron, dissolved [as Fe]DAILY MX <= 1 mg/L all year
001Iron, dissolved [as Fe]DAILY MX <= 209 lb/d all year
001Lead, total [as Pb]30DA AVG <= .09 mg/L Jan, Apr, Jul, Oct
001Lead, total [as Pb]DAILY MX <= .4 mg/L Jan, Apr, Jul, Oct
001Lead, total [as Pb]30DA AVG <= 5.3 lb/d Jan, Apr, Jul, Oct
001Lead, total [as Pb]DAILY MX <= 16 lb/d Jan, Apr, Jul, Oct
001Manganese, total [as Mn]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Zinc, total [as Zn]30DA AVG <= .17 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .96 mg/L all year
001Zinc, total [as Zn]30DA AVG <= 12 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 33 lb/d all year
001Antimony, total [as Sb]DAILY MX report only all year
001Selenium, total [as Se]DAILY MX report only all year
001TetrachloroethyleneDAILY MX report only Jan, Jul
001PhenolDAILY MX <= .1 mg/L all year
001Phenol30DA AVG <= 5 lb/d all year
001PhenolDAILY MX <= 10 lb/d all year
001NaphthaleneDAILY MX report only Jan, Apr, Jul, Oct
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Perfluorooctanoic acid (PFOA)DAILY MX report only all year
001Perfluorobutanoic acid (PFBA)DAILY MX report only all year
001Perfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
001Perfluoropentanoic acid (PFPeA)DAILY MX report only all year
001Perfluorohexanoic acid (PFHxA)DAILY MX report only all year
001Perfluoroheptanoic acid (PFHpA)DAILY MX report only all year
001Perfluorononanoic acid (PFNA)DAILY MX report only all year
001Perfluorodecanoic acid (PFDA)DAILY MX report only all year
001Perfluoroundecanoic acid (PFUnA)DAILY MX report only all year
001Perfluorododecanoic acid (PFDoA)DAILY MX report only all year
001Perfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
001Perfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
001Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
001Perfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
001Perfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
001Perfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
001Perfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
0011H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
0011H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
0011H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
001Perfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
001Perfluorononanesulfonic acid (PFNS)DAILY MX report only all year
001Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
001Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
001Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
001Perfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
0014,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 20 mg/L all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 2085 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 4170 lb/d all year
001PFAS SumDAILY MX report only all year
0013-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
001Perfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
0019-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
00111-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
0013-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
001Perfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
0012H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)DAILY MX report only all year
B01TetrachloroethyleneDAILY MX <= 1.1 lb/d Jun, Dec
B01NaphthaleneDAILY MX <= .69 lb/d Jan, Apr, Jul, Oct
B01Flow, in conduit or thru treatment plantMO AVG report only all year
B01Flow, in conduit or thru treatment plantDAILY MX report only all year
C01Flow, in conduit or thru treatment plantMO AVG report only all year
C01Flow, 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