US STEEL CORP

NPDES permit PA0004073 · Major 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

3values over a limit
0required values missing, on 0 form(s)
0of 79 forms filed late

Last period with anything received: 2026-06-30. Most often over: Oil & Grease (2), Coliform, fecal general (1).

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 (129)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitINST MAX <= 110 deg F all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Oil & GreaseMO AVG <= 15 mg/L all year
001Oil & GreaseDAILY MX <= 30 mg/L all year
001Chromium, hexavalent [as Cr]MO AVG report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only 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
001Zinc, total [as Zn]MO AVG report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Aluminum, total [as Al]MO AVG report only all year
001Aluminum, total [as Al]DAILY MX report only 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 residualDAILY MX <= 1 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
003Temperature, water deg. fahrenheitINST MAX <= 110 deg F all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003Oil & GreaseMO AVG <= 15 mg/L all year
003Oil & GreaseDAILY MX <= 30 mg/L all year
003Butyl benzyl phthalateMO AVG report only all year
003Butyl benzyl phthalateDAILY MX report only 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
003Chlorine, total residualMO AVG <= .5 mg/L all year
003Chlorine, total residualDAILY MX <= 1 mg/L all year
004Solids, total suspendedDAILY MX report only all year
004Oil & GreaseDAILY MX report only all year
004Nitrogen, total [as N]DAILY MX report only all year
004Phosphorus, total [as P]DAILY MX report only all year
004Copper, total [as Cu]DAILY MX report only all year
004Iron, total [as Fe]DAILY MX report only all year
004Lead, total [as Pb]DAILY MX report only all year
004Zinc, total [as Zn]DAILY MX report only all year
004Aluminum, total [as Al]DAILY MX report only all year
005Solids, total suspendedDAILY MX report only all year
005Oil & GreaseDAILY MX report only all year
005Nitrogen, total [as N]DAILY MX report only all year
005Phosphorus, total [as P]DAILY MX report only all year
005Copper, total [as Cu]DAILY MX report only all year
005Iron, total [as Fe]DAILY MX report only all year
005Lead, total [as Pb]DAILY MX report only all year
005Zinc, total [as Zn]DAILY MX report only all year
005Aluminum, total [as Al]DAILY MX report only all year
101Oxygen, dissolved [DO]INST MIN >= 4 mg/L all year
101pHINST MIN >= 6 SU all year
101pHINST MAX <= 9 SU all year
101Solids, total suspendedMO AVG <= 30 mg/L all year
101Solids, total suspendedWKLY AVG <= 45 mg/L all year
101Nitrogen, total [as N]MO AVG report only all year
101Nitrogen, ammonia total [as N]MO AVG report only all year
101Phosphorus, total [as P]MO AVG report only all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
101Chlorine, total residualMO AVG <= 1.4 mg/L all year
101Chlorine, total residualINST MAX <= 3.3 mg/L all year
101Coliform, fecal generalGEO MEAN <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
101Coliform, fecal generalGEO MEAN <= 200 #/100mL May, Jun, Jul, Aug, Sep
101Coliform, fecal generalINST MAX <= 10000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
101Coliform, fecal generalINST MAX <= 1000 #/100mL May, Jun, Jul, Aug, Sep
101BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
101BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 40 mg/L all year
201pHINST MIN >= 6 SU all year
201pHINST MAX <= 10 SU all year
201Solids, total suspendedMO AVG <= 30 mg/L all year
201Solids, total suspendedDAILY MX <= 60 mg/L all year
201Solids, total suspendedMO AVG <= 870 lb/d all year
201Solids, total suspendedDAILY MX <= 1990 lb/d all year
201Oil & GreaseMO AVG <= 10 mg/L all year
201Oil & GreaseDAILY MX <= 25 mg/L all year
201Oil & GreaseMO AVG <= 291 lb/d all year
201Oil & GreaseDAILY MX <= 849 lb/d all year
201Iron, total [as Fe]MO AVG <= 3.5 mg/L all year
201Iron, total [as Fe]DAILY MX <= 7 mg/L all year
201Lead, total [as Pb]MO AVG <= .15 mg/L all year
201Lead, total [as Pb]DAILY MX <= .45 mg/L all year
201Lead, total [as Pb]MO AVG <= 3.62 lb/d all year
201Lead, total [as Pb]DAILY MX <= 10.9 lb/d all year
201Zinc, total [as Zn]MO AVG <= .1 mg/L all year
201Zinc, total [as Zn]DAILY MX <= .3 mg/L all year
201Zinc, total [as Zn]MO AVG <= 4.38 lb/d all year
201Zinc, total [as Zn]DAILY MX <= 13.1 lb/d all year
201TetrachloroethyleneDAILY MX <= .032 mg/L all year
201TetrachloroethyleneDAILY MX <= .67 lb/d all year
201NaphthaleneDAILY MX <= .022 mg/L all year
201NaphthaleneDAILY MX <= .45 lb/d 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
301pHINST MIN >= 6 SU all year
301pHINST MAX <= 9 SU all year
301Solids, total suspendedMO AVG <= 24 mg/L all year
301Solids, total suspendedDAILY MX <= 48 mg/L all year
301Solids, total suspendedMO AVG <= 3200 lb/d all year
301Solids, total suspendedDAILY MX <= 8530 lb/d all year
301Oil & GreaseMO AVG <= 10 mg/L all year
301Oil & GreaseDAILY MX <= 30 mg/L all year
301Oil & GreaseDAILY MX <= 2140 lb/d 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
601pHINST MIN >= 6 SU all year
601pHINST MAX <= 9 SU all year
601Solids, total suspendedMO AVG <= 24 mg/L all year
601Solids, total suspendedDAILY MX <= 48 mg/L all year
601Solids, total suspendedMO AVG <= 3200 lb/d all year
601Solids, total suspendedDAILY MX <= 8530 lb/d all year
601Oil & GreaseMO AVG <= 10 mg/L all year
601Oil & GreaseDAILY MX <= 30 mg/L all year
601Oil & GreaseDAILY MX <= 2140 lb/d all year
601Flow, in conduit or thru treatment plantMO AVG report only all year
601Flow, in conduit or thru treatment plantDAILY MX report only all year
701pHINST MIN >= 6 SU all year
701pHINST MAX <= 9 SU all year
701Solids, total suspendedMO AVG <= 24 mg/L all year
701Solids, total suspendedDAILY MX <= 48 mg/L all year
701Solids, total suspendedMO AVG <= 3200 lb/d all year
701Solids, total suspendedDAILY MX <= 8530 lb/d all year
701Oil & GreaseMO AVG <= 10 mg/L all year
701Oil & GreaseDAILY MX <= 30 mg/L all year
701Oil & GreaseDAILY MX <= 2140 lb/d all year
701Flow, in conduit or thru treatment plantMO AVG report only all year
701Flow, 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