CATERPILLAR INC — NPDES permit IL0001830: limits, due date and EPA's record

NPDES permit IL0001830 · Major NON-POTW · administratively continued, expires 2023-01-31 · EPA's file as of 2026-09-19

This permit expired on 2023-01-31 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

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (4).

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 (220)

Outfall	Parameter	Statistic	Limit	Months
001	Temperature, water deg. fahrenheit	MO MAX	report only	all year
001	Oil & Grease	DAILY MX	report only	all year
001	Oil & Grease	DAILY MX	report only	all year
001	Cyanide, weak acid, dissociable	DAILY MX	report only	all year
001	Cyanide, weak acid, dissociable	DAILY MX	report only	all year
001	Cyanide, total [as CN]	DAILY MX	report only	all year
001	Cyanide, total [as CN]	DAILY MX	report only	all year
001	Chloride [as Cl]	DAILY MX	report only	all year
001	Chloride [as Cl]	DAILY MX	report only	all year
001	Sulfate, total [as SO4]	DAILY MX	report only	all year
001	Sulfate, total [as SO4]	DAILY MX	report only	all year
001	Fluoride, total [as F]	DAILY MX	report only	all year
001	Fluoride, total [as F]	DAILY MX	report only	all year
001	Arsenic, total [as As]	DAILY MX	report only	all year
001	Arsenic, total [as As]	DAILY MX	report only	all year
001	Barium, total [as Ba]	DAILY MX	report only	all year
001	Barium, total [as Ba]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
001	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
001	Chromium, total [as Cr]	DAILY MX	report only	all year
001	Chromium, total [as Cr]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Iron, total [as Fe]	DAILY MX	report only	Jan, Apr, Jul, Oct
001	Iron, total [as Fe]	DAILY MX	report only	all year
001	Iron, total [as Fe]	DAILY MX	report only	all year
001	Iron, dissolved [as Fe]	DAILY MX	report only	all year
001	Iron, dissolved [as Fe]	DAILY MX	report only	all year
001	Lead, total [as Pb]	DAILY MX	report only	all year
001	Lead, total [as Pb]	DAILY MX	report only	all year
001	Manganese, total [as Mn]	DAILY MX	report only	all year
001	Manganese, total [as Mn]	DAILY MX	report only	all year
001	Nickel, total [as Ni]	DAILY MX	report only	all year
001	Nickel, total [as Ni]	DAILY MX	report only	all year
001	Silver, total [as Ag]	DAILY MX	report only	all year
001	Silver, total [as Ag]	DAILY MX	report only	all year
001	Zinc, total [as Zn]	DAILY MX	report only	all year
001	Zinc, total [as Zn]	DAILY MX	report only	all year
001	Selenium, total [as Se]	DAILY MX	report only	all year
001	Selenium, total [as Se]	DAILY MX	report only	all year
001	Phenolics, total recoverable	DAILY MX	report only	all year
001	Phenolics, total recoverable	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Chlorine, total residual	DAILY MX	<= .05 mg/L	all year
001	Mercury, total [as Hg]	DAILY MX	report only	all year
001	Mercury, total [as Hg]	DAILY MX	report only	all year
006	Oil & Grease	DAILY MX	report only	all year
006	Oil & Grease	DAILY MX	report only	all year
006	Cyanide, weak acid, dissociable	DAILY MX	report only	all year
006	Cyanide, weak acid, dissociable	DAILY MX	report only	all year
006	Cyanide, total [as CN]	DAILY MX	report only	all year
006	Cyanide, total [as CN]	DAILY MX	report only	all year
006	Chloride [as Cl]	DAILY MX	report only	all year
006	Chloride [as Cl]	DAILY MX	report only	all year
006	Sulfate, total [as SO4]	DAILY MX	report only	all year
006	Sulfate, total [as SO4]	DAILY MX	report only	all year
006	Fluoride, total [as F]	DAILY MX	report only	all year
006	Fluoride, total [as F]	DAILY MX	report only	all year
006	Arsenic, total [as As]	DAILY MX	report only	all year
006	Arsenic, total [as As]	DAILY MX	report only	all year
006	Barium, total [as Ba]	DAILY MX	report only	all year
006	Barium, total [as Ba]	DAILY MX	report only	all year
006	Cadmium, total [as Cd]	DAILY MX	report only	all year
006	Cadmium, total [as Cd]	DAILY MX	report only	all year
006	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
006	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
006	Chromium, total [as Cr]	DAILY MX	report only	all year
006	Chromium, total [as Cr]	DAILY MX	report only	all year
006	Copper, total [as Cu]	DAILY MX	report only	all year
006	Copper, total [as Cu]	DAILY MX	report only	all year
006	Iron, total [as Fe]	DAILY MX	report only	all year
006	Iron, total [as Fe]	DAILY MX	report only	all year
006	Iron, total [as Fe]	DAILY MX	report only	all year
006	Iron, total [as Fe]	DAILY MX	report only	all year
006	Iron, dissolved [as Fe]	DAILY MX	report only	all year
006	Iron, dissolved [as Fe]	DAILY MX	report only	all year
006	Lead, total [as Pb]	DAILY MX	report only	all year
006	Lead, total [as Pb]	DAILY MX	report only	all year
006	Manganese, total [as Mn]	DAILY MX	report only	all year
006	Manganese, total [as Mn]	DAILY MX	report only	all year
006	Nickel, total [as Ni]	DAILY MX	report only	all year
006	Nickel, total [as Ni]	DAILY MX	report only	all year
006	Silver, total [as Ag]	DAILY MX	report only	all year
006	Silver, total [as Ag]	DAILY MX	report only	all year
006	Zinc, total [as Zn]	DAILY MX	report only	all year
006	Zinc, total [as Zn]	DAILY MX	report only	all year
006	Selenium, total [as Se]	DAILY MX	report only	all year
006	Selenium, total [as Se]	DAILY MX	report only	all year
006	Phenolics, total recoverable	DAILY MX	report only	all year
006	Phenolics, total recoverable	DAILY MX	report only	all year
006	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
006	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
006	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
006	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
006	Mercury, total [as Hg]	DAILY MX	report only	all year
006	Mercury, total [as Hg]	DAILY MX	report only	all year
006	Mercury, total [as Hg]	DAILY MX	report only	all year
006	Mercury, total [as Hg]	DAILY MX	report only	all year
007	Oil & Grease	DAILY MX	report only	all year
007	Oil & Grease	DAILY MX	report only	all year
007	Cyanide, weak acid, dissociable	DAILY MX	report only	all year
007	Cyanide, weak acid, dissociable	DAILY MX	report only	all year
007	Cyanide, total [as CN]	DAILY MX	report only	all year
007	Cyanide, total [as CN]	DAILY MX	report only	all year
007	Chloride [as Cl]	DAILY MX	report only	all year
007	Chloride [as Cl]	DAILY MX	report only	all year
007	Sulfate, total [as SO4]	DAILY MX	report only	all year
007	Sulfate, total [as SO4]	DAILY MX	report only	all year
007	Fluoride, total [as F]	DAILY MX	report only	all year
007	Fluoride, total [as F]	DAILY MX	report only	all year
007	Arsenic, total [as As]	DAILY MX	report only	all year
007	Arsenic, total [as As]	DAILY MX	report only	all year
007	Barium, total [as Ba]	DAILY MX	report only	all year
007	Barium, total [as Ba]	DAILY MX	report only	all year
007	Cadmium, total [as Cd]	DAILY MX	report only	all year
007	Cadmium, total [as Cd]	DAILY MX	report only	all year
007	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
007	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
007	Chromium, total [as Cr]	DAILY MX	report only	all year
007	Chromium, total [as Cr]	DAILY MX	report only	all year
007	Copper, total [as Cu]	DAILY MX	report only	all year
007	Copper, total [as Cu]	DAILY MX	report only	all year
007	Iron, total [as Fe]	DAILY MX	report only	all year
007	Iron, total [as Fe]	DAILY MX	report only	all year
007	Iron, total [as Fe]	DAILY MX	report only	all year
007	Iron, total [as Fe]	DAILY MX	report only	all year
007	Iron, dissolved [as Fe]	DAILY MX	report only	all year
007	Iron, dissolved [as Fe]	DAILY MX	report only	all year
007	Lead, total [as Pb]	DAILY MX	report only	all year
007	Lead, total [as Pb]	DAILY MX	report only	all year
007	Manganese, total [as Mn]	DAILY MX	report only	all year
007	Manganese, total [as Mn]	DAILY MX	report only	all year
007	Nickel, total [as Ni]	DAILY MX	report only	all year
007	Nickel, total [as Ni]	DAILY MX	report only	all year
007	Silver, total [as Ag]	DAILY MX	report only	all year
007	Silver, total [as Ag]	DAILY MX	report only	all year
007	Zinc, total [as Zn]	DAILY MX	report only	all year
007	Zinc, total [as Zn]	DAILY MX	report only	all year
007	Selenium, total [as Se]	DAILY MX	report only	all year
007	Selenium, total [as Se]	DAILY MX	report only	all year
007	Phenolics, total recoverable	DAILY MX	report only	all year
007	Phenolics, total recoverable	DAILY MX	report only	all year
007	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
007	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
007	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
007	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
007	Mercury, total [as Hg]	DAILY MX	report only	all year
007	Mercury, total [as Hg]	DAILY MX	report only	all year
007	Mercury, total [as Hg]	DAILY MX	report only	all year
007	Mercury, total [as Hg]	DAILY MX	report only	all year
A01	BOD, 5-day, 20 deg. C	30DA AVG	<= 20 mg/L	all year
A01	BOD, 5-day, 20 deg. C	DAILY MX	<= 40 mg/L	all year
A01	BOD, 5-day, 20 deg. C	30DA AVG	<= 121 lb/d	all year
A01	BOD, 5-day, 20 deg. C	DAILY MX	<= 242 lb/d	all year
A01	pH	MO MIN	>= 6 SU	all year
A01	pH	MO MAX	<= 9 SU	all year
A01	Solids, total suspended	30DA AVG	<= 25 mg/L	all year
A01	Solids, total suspended	DAILY MX	<= 50 mg/L	all year
A01	Solids, total suspended	30DA AVG	<= 151 lb/d	all year
A01	Solids, total suspended	DAILY MX	<= 302 lb/d	all year
A01	Nitrogen, ammonia total [as N]	QRTR AVG	report only	Mar, Jun, Sep, Dec
A01	Nitrogen, ammonia total [as N]	QB	report only	Mar, Jun, Sep, Dec
A01	Chromium, hexavalent [as Cr]	30DA AVG	<= .1 mg/L	all year
A01	Chromium, hexavalent [as Cr]	DAILY MX	<= .3 mg/L	all year
A01	Chromium, hexavalent [as Cr]	30DA AVG	<= .5 lb/d	all year
A01	Chromium, hexavalent [as Cr]	DAILY MX	<= 1 lb/d	all year
A01	Chromium, total [as Cr]	30DA AVG	<= 1 mg/L	all year
A01	Chromium, total [as Cr]	DAILY MX	<= 2 mg/L	all year
A01	Chromium, total [as Cr]	30DA AVG	<= 5 lb/d	all year
A01	Chromium, total [as Cr]	DAILY MX	<= 10 lb/d	all year
A01	Iron, total [as Fe]	30DA AVG	<= 2 mg/L	all year
A01	Iron, total [as Fe]	DAILY MX	<= 4 mg/L	all year
A01	Iron, total [as Fe]	30DA AVG	<= 10 lb/d	all year
A01	Iron, total [as Fe]	DAILY MX	<= 20 lb/d	all year
A01	Zinc, total [as Zn]	30DA AVG	<= 1 mg/L	all year
A01	Zinc, total [as Zn]	DAILY MX	<= 2 mg/L	all year
A01	Zinc, total [as Zn]	30DA AVG	<= 5 lb/d	all year
A01	Zinc, total [as Zn]	DAILY MX	<= 10 lb/d	all year
A01	Oil and grease	30DA AVG	<= 15 mg/L	all year
A01	Oil and grease	DAILY MX	<= 30 mg/L	all year
A01	Oil and grease	30DA AVG	<= 60 lb/d	all year
A01	Oil and grease	DAILY MX	<= 120 lb/d	all year
A01	Phenol	30DA AVG	<= .3 mg/L	all year
A01	Phenol	DAILY MX	<= .6 mg/L	all year
A01	Phenol	30DA AVG	<= 1.2 lb/d	all year
A01	Phenol	DAILY MX	<= 2.4 lb/d	all year
A01	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
A01	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
A01	Coliform, fecal general	DAILY MX	<= 400 #/100mL	all year
C01	pH	MO MIN	>= 6 SU	all year
C01	pH	MO MAX	<= 9 SU	all year
C01	Solids, total suspended	30DA AVG	<= 15 mg/L	all year
C01	Solids, total suspended	DAILY MX	<= 30 mg/L	all year
C01	Solids, total suspended	30DA AVG	<= 2.85 lb/d	all year
C01	Solids, total suspended	DAILY MX	<= 7.18 lb/d	all year
C01	Copper, total [as Cu]	30DA AVG	<= .5 mg/L	all year
C01	Copper, total [as Cu]	DAILY MX	<= 1 mg/L	all year
C01	Copper, total [as Cu]	30DA AVG	<= .03 lb/d	all year
C01	Copper, total [as Cu]	DAILY MX	<= .05 lb/d	all year
C01	Lead, total [as Pb]	30DA AVG	<= .2 mg/L	all year
C01	Lead, total [as Pb]	DAILY MX	<= .4 mg/L	all year
C01	Lead, total [as Pb]	30DA AVG	<= .05 lb/d	all year
C01	Lead, total [as Pb]	DAILY MX	<= .1 lb/d	all year
C01	Zinc, total [as Zn]	30DA AVG	<= 1 mg/L	all year
C01	Zinc, total [as Zn]	DAILY MX	<= 2 mg/L	all year
C01	Zinc, total [as Zn]	30DA AVG	<= .07 lb/d	all year
C01	Zinc, total [as Zn]	DAILY MX	<= .19 lb/d	all year
C01	Oil and grease	30DA AVG	<= 15 mg/L	all year
C01	Oil and grease	DAILY MX	<= 30 mg/L	all year
C01	Oil and grease	30DA AVG	<= 1.89 lb/d	all year
C01	Oil and grease	DAILY MX	<= 5.67 lb/d	all year
C01	Phenol	30DA AVG	<= .3 mg/L	all year
C01	Phenol	DAILY MX	<= .6 mg/L	all year
C01	Phenol	30DA AVG	<= .06 lb/d	all year
C01	Phenol	DAILY MX	<= .16 lb/d	all year
C01	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
C01	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year