CATERPILLAR INC

NPDES permit IL0001414 · Major NON-POTW · administratively continued, expires 2026-08-31 · 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.

This permit expired on 2026-08-31 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

0values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

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

Reporting

Reports are due about 55 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (93)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. C30DA AVG <= 20 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 40 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG <= 414 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 828 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 25 mg/L all year
001Solids, total suspendedDAILY MX <= 50 mg/L all year
001Solids, total suspended30DA AVG <= 517 lb/d all year
001Solids, total suspendedDAILY MX <= 1034 lb/d all year
001Cyanide, total [as CN]ANNL AVG <= .1 mg/L all year
001Cyanide, total [as CN]ANNL MAX <= .2 mg/L all year
001Cyanide, total [as CN]ANNL AVG <= 1.8 lb/d all year
001Cyanide, total [as CN]ANNL MAX <= 3.6 lb/d all year
001Fluoride, total [as F]ANNL AVG report only all year
001Fluoride, total [as F]ANNL MAX report only all year
001Arsenic, total [as As]ANNL AVG report only all year
001Arsenic, total [as As]ANNL MAX report only all year
001Barium, total [as Ba]ANNL AVG report only all year
001Barium, total [as Ba]ANNL MAX report only all year
001Cadmium, total [as Cd]ANNL AVG <= .15 mg/L all year
001Cadmium, total [as Cd]ANNL MAX <= .3 mg/L all year
001Cadmium, total [as Cd]ANNL AVG <= 2.7 lb/d all year
001Cadmium, total [as Cd]ANNL MAX <= 5.4 lb/d all year
001Chromium, total [as Cr]30DA AVG <= 1 mg/L all year
001Chromium, total [as Cr]DAILY MX <= 2 mg/L all year
001Chromium, total [as Cr]30DA AVG <= 18 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 36 lb/d all year
001Copper, total [as Cu]ANNL AVG <= .08 mg/L all year
001Copper, total [as Cu]ANNL MAX <= .08 mg/L all year
001Copper, total [as Cu]ANNL AVG <= 1.7 lb/d all year
001Copper, total [as Cu]ANNL MAX <= 1.7 lb/d 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 <= 36 lb/d all year
001Iron, total [as Fe]DAILY MX <= 72 lb/d all year
001Lead, total [as Pb]ANNL AVG <= .2 mg/L all year
001Lead, total [as Pb]ANNL MAX <= .4 mg/L all year
001Lead, total [as Pb]ANNL AVG <= 3.6 lb/d all year
001Lead, total [as Pb]ANNL MAX <= 7.2 lb/d all year
001Manganese, total [as Mn]ANNL AVG report only all year
001Manganese, total [as Mn]ANNL MAX report only all year
001Thallium, total [as Tl]ANNL AVG report only all year
001Thallium, total [as Tl]ANNL MAX report only all year
001Nickel, total [as Ni]ANNL AVG <= 1 mg/L all year
001Nickel, total [as Ni]ANNL MAX <= 2 mg/L all year
001Nickel, total [as Ni]ANNL AVG <= 18 lb/d all year
001Nickel, total [as Ni]ANNL MAX <= 36 lb/d all year
001Silver, total [as Ag]ANNL AVG <= .1 mg/L all year
001Silver, total [as Ag]ANNL MAX <= .2 mg/L all year
001Silver, total [as Ag]ANNL AVG <= 1.8 lb/d all year
001Silver, total [as Ag]ANNL MAX <= 3.6 lb/d 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 <= 10 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 21 lb/d all year
001Antimony, total [as Sb]ANNL AVG report only all year
001Antimony, total [as Sb]ANNL MAX report only all year
001Selenium, total [as Se]ANNL AVG report only all year
001Selenium, total [as Se]ANNL MAX report only all year
001Oil and grease30DA AVG <= 15 mg/L all year
001Oil and greaseDAILY MX <= 30 mg/L all year
001Oil and grease30DA AVG <= 310 lb/d all year
001Oil and greaseDAILY MX <= 620 lb/d all year
001Phenolics, total recoverableANNL AVG report only all year
001Phenolics, total recoverableANNL MAX 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
001Mercury, total [as Hg]ANNL AVG report only all year
001Mercury, total [as Hg]ANNL MAX report only all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct
001Organics, total toxic [TTO]ANNL MAX <= 1.44 mg/L all year
001Organics, total toxic [TTO]ANNL MAX <= 29.8 lb/d all year
003Cyanide, total [as CN]ANNL AVG report only all year
003Cyanide, total [as CN]ANNL MAX report only all year
003Cadmium, total [as Cd]ANNL AVG report only all year
003Cadmium, total [as Cd]ANNL MAX report only all year
003Chromium, total [as Cr]ANNL AVG report only all year
003Chromium, total [as Cr]ANNL MAX report only all year
003Copper, total [as Cu]ANNL AVG report only all year
003Copper, total [as Cu]ANNL MAX report only all year
003Iron, total [as Fe]ANNL AVG report only all year
003Iron, total [as Fe]ANNL MAX report only all year
003Lead, total [as Pb]ANNL AVG report only all year
003Lead, total [as Pb]ANNL MAX report only all year
003Manganese, total [as Mn]ANNL AVG report only all year
003Manganese, total [as Mn]ANNL MAX report only all year
003Nickel, total [as Ni]ANNL AVG report only all year
003Nickel, total [as Ni]ANNL MAX report only all year
003Silver, total [as Ag]ANNL AVG report only all year
003Silver, total [as Ag]ANNL MAX report only all year
003Zinc, total [as Zn]ANNL AVG report only all year
003Zinc, total [as Zn]ANNL MAX 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