§502.103. Large CAFOs

An Animal Feeding Operation is defined as a Large CAFO if at least the numbers of animals specified in any of the following categories are stabled or confined:

 

Number of Animals	Kind of Animals
700	Mature dairy cows, whether milked or dry
1,000	Veal calves
1,000	Cattle other than mature dairy cows or veal calves. Cattle includes heifers, steers, bulls, and cow/calf pairs.
2,500	Swine, each weighing 55 pounds or more
10,000	Swine, each weighing less than 55 pounds
500	Horses
10,000	Sheep or lambs
55,000	Turkeys
30,000	Laying hens or broilers, if the Animal Feeding Operation uses a liquid manure handling system
125,000	Chickens (other than laying hens), if the Animal Feeding Operation uses other than a liquid manure handling system
82,000	Laying hens, if the Animal Feeding Operation uses other than a liquid manure handling system
30,000	Ducks, if the Animal Feeding Operation uses other than a liquid manure handling system
5,000	Ducks, if the Animal Feeding Operation uses a liquid manure handling system

 

(Source:  Amended at 48 Ill. Reg. 3196, effective February 15, 2024)