AK Steel Corporation

NPDES permit OH0006840 · Major NON-POTW · effective, expires 2028-10-31 · 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 33 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among OH permits in EPA's filings — check your permit).

Limits in force (53)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 274 kg/d all year
001Solids, total suspendedDAILY MX <= 731 kg/d all year
001Oil and grease [soxhlet extr.] tot.DAILY MX <= 10 mg/L all year
001Oil and grease [soxhlet extr.] tot.MO AVG <= 61.8 kg/d all year
001Oil and grease [soxhlet extr.] tot.DAILY MX <= 185 kg/d all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Fluoride, total [as F]MO AVG report only all year
001Fluoride, total [as F]DAILY MX report only all year
001Zinc, total recoverableMO AVG <= .359 kg/d all year
001Zinc, total recoverableDAILY MX <= 1.07 kg/d all year
001Lead, total recoverableMO AVG <= 22 ug/L all year
001Lead, total recoverableDAILY MX <= 435 ug/L all year
001Lead, total recoverableMO AVG <= .238 kg/d all year
001Lead, total recoverableDAILY MX <= .715 kg/d all year
001Copper, total recoverableMO AVG report only Mar, Jun, Aug, Dec
001Copper, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
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 residualDAILY MX report only all year
001Mercury, total low levelMO AVG report only Jun
001Mercury, total low levelDAILY MX report only Jun
001Toxicity [acute], Ceriodaphnia dubiaMO AVG report only Aug
001Toxicity [acute], Ceriodaphnia dubiaDAILY MX report only Aug
001Toxicity [chronic], Ceriodaphnia dubiaMO AVG report only Aug
001Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only Aug
006pHDAILY MN >= 6.5 SU all year
006pHDAILY MX <= 9 SU all year
006Solids, total suspendedMO AVG report only all year
006Solids, total suspendedDAILY MX report only all year
006Oil and grease [soxhlet extr.] tot.DAILY MX <= 10 mg/L all year
006Fluoride, total [as F]MO AVG report only Mar, Jun, Aug, Dec
006Fluoride, total [as F]DAILY MX report only Mar, Jun, Aug, Dec
006Iron, total recoverableMO AVG report only Mar, Jun, Aug, Dec
006Iron, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
006Boron, total recoverableMO AVG report only Mar, Jun, Aug, Dec
006Boron, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
006Zinc, total recoverableMO AVG report only all year
006Zinc, total recoverableDAILY MX report only all year
006Lead, total recoverableMO AVG report only Mar, Jun, Aug, Dec
006Lead, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
006Chromium, total recoverableMO AVG report only Mar, Jun, Aug, Dec
006Chromium, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Mercury, total low levelMO AVG report only Jun
006Mercury, total low levelDAILY MX report only Jun
901Temperature, water deg. centigradeMO AVG report only all year
901Temperature, water deg. centigradeDAILY 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