US STEEL CORP

NPDES permit PA0094510 · Major NON-POTW · effective, expires 2026-12-31 · 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

2values over a limit
0required values missing, on 0 form(s)
0of 114 forms filed late

Last period with anything received: 2026-06-30. Most often over: Zinc, total [as Zn] (2).

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 (184)

OutfallParameterStatisticLimitMonths
005Temperature, water deg. fahrenheitINST MAX <= 105.7 deg F Nov
005Temperature, water deg. fahrenheitINST MAX <= 88.1 deg F Nov
005Temperature, water deg. fahrenheitINST MAX <= 98.1 deg F Feb
005Temperature, water deg. fahrenheitINST MAX <= 105.9 deg F Oct
005Temperature, water deg. fahrenheitINST MAX <= 110 deg F Oct
005Temperature, water deg. fahrenheitINST MAX <= 110 deg F Mar, Apr, May, Jun, Jul, Aug, Sep
005Temperature, water deg. fahrenheitINST MAX <= 92.7 deg F Jan
005Temperature, water deg. fahrenheitINST MAX <= 80.3 deg F Dec
005Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
005pHINST MIN >= 6 SU all year
005pHINST MAX <= 9 SU all year
005Solids, total suspendedDAILY MX report only all year
005Fluoride, total [as F]DAILY MX report only all year
005Copper, total [as Cu]MO AVG report only all year
005Copper, total [as Cu]DAILY MX report only all year
005Iron, total [as Fe]DAILY MX report only all year
005Manganese, total [as Mn]DAILY MX report only all year
005Zinc, total [as Zn]DAILY MX report only all year
005Aluminum, total [as Al]MO AVG report only all year
005Aluminum, total [as Al]DAILY MX report only all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Chlorine, total residualMO AVG <= .3 mg/L all year
005Chlorine, total residualINST MAX <= .75 mg/L all year
006Temperature, water deg. fahrenheitINST MAX <= 92.7 deg F Jan
006Temperature, water deg. fahrenheitINST MAX <= 110 deg F Oct
006Temperature, water deg. fahrenheitINST MAX <= 105.9 deg F Oct
006Temperature, water deg. fahrenheitINST MAX <= 105.7 deg F Nov
006Temperature, water deg. fahrenheitINST MAX <= 88.1 deg F Nov
006Temperature, water deg. fahrenheitINST MAX <= 80.3 deg F Dec
006Temperature, water deg. fahrenheitINST MAX <= 98.1 deg F Feb
006Temperature, water deg. fahrenheitINST MAX <= 110 deg F Mar, Apr, May, Jun, Jul, Aug, Sep
006pHINST MIN >= 6 SU all year
006pHINST MAX <= 9 SU all year
006Solids, total suspendedDAILY MX report only all year
006Copper, total [as Cu]DAILY MX report only all year
006Iron, total [as Fe]DAILY MX report only all year
006Lead, total [as Pb]DAILY MX report only all year
006Zinc, total [as Zn]DAILY MX report only all year
006Aluminum, total [as Al]MO AVG report only all year
006Aluminum, total [as Al]DAILY MX report only all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Chlorine, total residualMO AVG <= .5 mg/L all year
006Chlorine, total residualINST MAX <= 1.25 mg/L all year
008Temperature, water deg. fahrenheitINST MAX <= 110 deg F Oct
008Temperature, water deg. fahrenheitINST MAX <= 92.7 deg F Jan
008Temperature, water deg. fahrenheitINST MAX <= 105.9 deg F Oct
008Temperature, water deg. fahrenheitINST MAX <= 105.7 deg F Nov
008Temperature, water deg. fahrenheitINST MAX <= 88.1 deg F Nov
008Temperature, water deg. fahrenheitINST MAX <= 80.3 deg F Dec
008Temperature, water deg. fahrenheitINST MAX <= 98.1 deg F Feb
008Temperature, water deg. fahrenheitINST MAX <= 110 deg F Mar, Apr, May, Jun, Jul, Aug, Sep
008pHINST MIN >= 6 SU all year
008pHINST MAX <= 9 SU all year
008Solids, total suspendedDAILY MX report only all year
008Copper, total [as Cu]DAILY MX report only all year
008Iron, total [as Fe]DAILY MX report only all year
008Lead, total [as Pb]DAILY MX report only all year
008Zinc, total [as Zn]DAILY MX report only all year
008Aluminum, total [as Al]DAILY MX report only all year
008Flow, in conduit or thru treatment plantMO AVG report only all year
008Flow, in conduit or thru treatment plantDAILY MX report only all year
008Chlorine, total residualMO AVG <= .5 mg/L all year
008Chlorine, total residualINST MAX <= 1.25 mg/L all year
009Temperature, water deg. fahrenheitINST MAX <= 110 deg F Oct
009Temperature, water deg. fahrenheitINST MAX <= 88.1 deg F Nov
009Temperature, water deg. fahrenheitINST MAX <= 92.7 deg F Jan
009Temperature, water deg. fahrenheitINST MAX <= 105.7 deg F Nov
009Temperature, water deg. fahrenheitINST MAX <= 105.9 deg F Oct
009Temperature, water deg. fahrenheitINST MAX <= 110 deg F Mar, Apr, May, Jun, Jul, Aug, Sep
009Temperature, water deg. fahrenheitINST MAX <= 98.1 deg F Feb
009Temperature, water deg. fahrenheitINST MAX <= 80.3 deg F Dec
009pHINST MIN >= 6 SU all year
009pHINST MAX <= 9 SU all year
009Solids, total suspendedDAILY MX report only all year
009Fluoride, total [as F]DAILY MX report only all year
009Copper, total [as Cu]DAILY MX report only all year
009Iron, total [as Fe]DAILY MX report only all year
009Lead, total [as Pb]DAILY MX report only all year
009Zinc, total [as Zn]MO AVG <= .711 mg/L all year
009Zinc, total [as Zn]DAILY MX <= 1.42 mg/L all year
009Aluminum, total [as Al]MO AVG report only all year
009Aluminum, total [as Al]DAILY MX report only all year
009Flow, in conduit or thru treatment plantMO AVG report only all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
009Chlorine, total residualMO AVG <= .5 mg/L all year
009Chlorine, total residualINST MAX <= 1.25 mg/L all year
009AcrylamideMO AVG report only all year
009AcrylamideDAILY MX report only all year
106pHINST MIN >= 6 SU all year
106pHINST MAX <= 9 SU all year
106Solids, total suspendedMO AVG report only all year
106Solids, total suspendedDAILY MX report only all year
106Solids, total suspendedMO AVG <= 365 lb/d all year
106Solids, total suspendedDAILY MX <= 1097 lb/d all year
106Nitrogen, ammonia total [as N]MO AVG report only all year
106Nitrogen, ammonia total [as N]DAILY MX report only all year
106Nitrogen, ammonia total [as N]MO AVG <= 41 lb/d all year
106Nitrogen, ammonia total [as N]DAILY MX <= 123 lb/d all year
106Cyanide, total [as CN]MO AVG report only all year
106Cyanide, total [as CN]DAILY MX report only all year
106Cyanide, total [as CN]MO AVG <= 12.3 lb/d all year
106Cyanide, total [as CN]DAILY MX <= 24.6 lb/d all year
106Lead, total [as Pb]MO AVG report only all year
106Lead, total [as Pb]DAILY MX report only all year
106Lead, total [as Pb]MO AVG <= 1.23 lb/d all year
106Lead, total [as Pb]DAILY MX <= 3.69 lb/d all year
106Zinc, total [as Zn]MO AVG report only all year
106Zinc, total [as Zn]DAILY MX report only all year
106Zinc, total [as Zn]MO AVG <= 1.84 lb/d all year
106Zinc, total [as Zn]DAILY MX <= 5.53 lb/d all year
106Phenolics, total recoverableMO AVG report only all year
106Phenolics, total recoverableDAILY MX report only all year
106Phenolics, total recoverableMO AVG <= .41 lb/d all year
106Phenolics, total recoverableDAILY MX <= .816 lb/d all year
106Flow, in conduit or thru treatment plantMO AVG report only all year
106Flow, in conduit or thru treatment plantDAILY MX report only all year
109pHINST MIN >= 6 SU all year
109pHINST MAX <= 9 SU all year
109Solids, total suspendedMO AVG report only all year
109Solids, total suspendedDAILY MX report only all year
109Solids, total suspendedMO AVG <= 415 lb/d all year
109Solids, total suspendedDAILY MX <= 1240 lb/d all year
109Oil & GreaseMO AVG <= 15 mg/L all year
109Oil & GreaseDAILY MX <= 30 mg/L all year
109Oil & GreaseMO AVG <= 3.67 lb/d all year
109Oil & GreaseDAILY MX <= 11.1 lb/d all year
109Lead, total [as Pb]MO AVG report only all year
109Lead, total [as Pb]DAILY MX report only all year
109Lead, total [as Pb]MO AVG <= 2.62 lb/d all year
109Lead, total [as Pb]DAILY MX <= 7.84 lb/d all year
109Zinc, total [as Zn]MO AVG report only all year
109Zinc, total [as Zn]DAILY MX report only all year
109Zinc, total [as Zn]MO AVG <= 3.93 lb/d all year
109Zinc, total [as Zn]DAILY MX <= 11.8 lb/d all year
109Flow, in conduit or thru treatment plantMO AVG report only all year
109Flow, in conduit or thru treatment plantDAILY MX report only all year
209pHINST MIN >= 6 SU all year
209pHINST MAX <= 9 SU all year
209Solids, total suspendedMO AVG <= 25 mg/L all year
209Solids, total suspendedDAILY MX <= 70 mg/L all year
209Solids, total suspendedMO AVG <= 34.7 lb/d all year
209Solids, total suspendedDAILY MX <= 97 lb/d all year
209Oil & GreaseMO AVG <= 10 mg/L all year
209Oil & GreaseDAILY MX <= 30 mg/L all year
209Oil & GreaseMO AVG <= 13.8 lb/d all year
209Oil & GreaseDAILY MX <= 41.6 lb/d all year
209Lead, total [as Pb]MO AVG <= .3 mg/L all year
209Lead, total [as Pb]DAILY MX <= .9 mg/L all year
209Lead, total [as Pb]MO AVG <= .416 lb/d all year
209Lead, total [as Pb]DAILY MX <= 1.25 lb/d all year
209Zinc, total [as Zn]MO AVG <= .45 mg/L all year
209Zinc, total [as Zn]DAILY MX <= 1.35 mg/L all year
209Zinc, total [as Zn]MO AVG <= .623 lb/d all year
209Zinc, total [as Zn]DAILY MX <= 1.87 lb/d all year
209Flow, in conduit or thru treatment plantMO AVG report only all year
209Flow, in conduit or thru treatment plantDAILY MX report only all year
309pHINST MIN >= 6 SU all year
309pHINST MAX <= 9 SU all year
309Solids, total suspendedMO AVG <= 25 mg/L all year
309Solids, total suspendedDAILY MX <= 70 mg/L all year
309Solids, total suspendedMO AVG <= 34.7 lb/d all year
309Solids, total suspendedDAILY MX <= 97 lb/d all year
309Oil & GreaseMO AVG <= 10 mg/L all year
309Oil & GreaseDAILY MX <= 30 mg/L all year
309Oil & GreaseMO AVG <= 13.8 lb/d all year
309Oil & GreaseDAILY MX <= 41.6 lb/d all year
309Lead, total [as Pb]MO AVG <= .3 mg/L all year
309Lead, total [as Pb]DAILY MX <= .9 mg/L all year
309Lead, total [as Pb]MO AVG <= .416 lb/d all year
309Lead, total [as Pb]DAILY MX <= 1.25 lb/d all year
309Zinc, total [as Zn]MO AVG <= .45 mg/L all year
309Zinc, total [as Zn]DAILY MX <= 1.35 mg/L all year
309Zinc, total [as Zn]MO AVG <= .623 lb/d all year
309Zinc, total [as Zn]DAILY MX <= 1.87 lb/d all year
309Flow, in conduit or thru treatment plantMO AVG report only all year
309Flow, in conduit or thru treatment plantDAILY MX report only all year
409pHINST MIN >= 6 SU all year
409pHINST MAX <= 9 SU all year
409Flow, in conduit or thru treatment plantMO AVG report only all year
409Flow, in conduit or thru treatment plantDAILY MX report only all year
409Chlorine, total residualMO AVG <= .5 mg/L all year
409Chlorine, total residualINST MAX <= 1.6 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