ALTON STEEL INC

NPDES permit IL0000612 · Major NON-POTW · administratively continued, expires 2024-04-30 · 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.

This permit expired on 2024-04-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

7values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-08-31. Most often over: Chlorine, total residual (4), pH (1), Solids, total suspended (1).

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 (82)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO MAX report only all year
001pHMO MIN >= 6 SU all year
001pHMO MIN >= 6 SU all year
001pHMO MAX <= 10 SU all year
001pHMO MAX <= 9 SU all year
001Solids, total suspended30DA AVG <= 15 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspended30DA AVG <= 91 lb/d all year
001Solids, total suspendedDAILY MX <= 182 lb/d all year
001Oil & Grease30DA AVG <= 15 mg/L all year
001Oil & GreaseSEMI AVG report only all year
001Oil & GreaseSEMI AVG report only all year
001Oil & GreaseDAILY MX <= 30 mg/L all year
001Oil & GreaseSX report only all year
001Oil & GreaseSX report only all year
001Oil & Grease30DA AVG <= 66 lb/d all year
001Oil & GreaseDAILY MX <= 132 lb/d all year
001Arsenic, total [as As]SEMI AVG report only all year
001Arsenic, total [as As]SEMI AVG report only all year
001Arsenic, total [as As]SX report only all year
001Arsenic, total [as As]SX report only all year
001Cadmium, total [as Cd]SEMI AVG report only all year
001Cadmium, total [as Cd]SEMI AVG report only all year
001Cadmium, total [as Cd]SX report only all year
001Cadmium, total [as Cd]SX report only all year
001Chromium, hexavalent [as Cr]SEMI AVG report only all year
001Chromium, hexavalent [as Cr]SEMI AVG report only all year
001Chromium, hexavalent [as Cr]SX report only all year
001Chromium, hexavalent [as Cr]SX report only all year
001Chromium, total [as Cr]SEMI AVG report only all year
001Chromium, total [as Cr]SEMI AVG report only all year
001Chromium, total [as Cr]SX report only all year
001Chromium, total [as Cr]SX report only all year
001Copper, total [as Cu]SEMI AVG report only all year
001Copper, total [as Cu]SEMI AVG report only all year
001Copper, total [as Cu]SX report only all year
001Copper, total [as Cu]SX 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 <= 12 lb/d all year
001Iron, total [as Fe]DAILY MX <= 24 lb/d all year
001Iron, dissolved [as Fe]SEMI AVG report only all year
001Iron, dissolved [as Fe]SEMI AVG report only all year
001Iron, dissolved [as Fe]SX report only all year
001Iron, dissolved [as Fe]SX report only all year
001Lead, total [as Pb]30DA AVG report only all year
001Lead, total [as Pb]DAILY MX <= .18 mg/L all year
001Lead, total [as Pb]30DA AVG <= .55 lb/d all year
001Lead, total [as Pb]DAILY MX <= .86 lb/d all year
001Manganese, total [as Mn]SEMI AVG report only all year
001Manganese, total [as Mn]SEMI AVG report only all year
001Manganese, total [as Mn]SX report only all year
001Manganese, total [as Mn]SX report only all year
001Nickel, total [as Ni]SEMI AVG report only all year
001Nickel, total [as Ni]SEMI AVG report only all year
001Nickel, total [as Ni]SX report only all year
001Nickel, total [as Ni]SX report only all year
001Zinc, total [as Zn]30DA AVG <= 1 mg/L all year
001Zinc, total [as Zn]DAILY MX <= 2 mg/L all year
001Zinc, total [as Zn]30DA AVG <= 2.4 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 5.1 lb/d all year
001Polychlorinated biphenyls [PCBs]MO AVG report only Oct
001Polychlorinated biphenyls [PCBs]DAILY MX report only 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
001Chlorine, total residualDAILY MX <= .05 mg/L all year
001Mercury, total [as Hg]SEMI AVG report only all year
001Mercury, total [as Hg]SEMI AVG report only all year
001Mercury, total [as Hg]SX report only all year
001Mercury, total [as Hg]SX report only all year
200pHQC report only all year
200pHQC report only all year
200pHQB report only all year
200pHQB report only all year
200Copper, total [as Cu]DAILY MX <= .0505 mg/L all year
200Copper, total [as Cu]DAILY MX <= .0505 mg/L all year
200Lead, total [as Pb]QB <= .3942 mg/L all year
200Lead, total [as Pb]QB <= .3942 mg/L all year
200Zinc, total [as Zn]QB <= .3134 mg/L all year
200Zinc, total [as Zn]QB <= .3134 mg/L all year
200Flow, in conduit or thru treatment plantMO AVG report only all year
200Flow, 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