A-Treat was formally established in 1918 by Joseph C. and John L. ("Jack") Egizio. Their father, Gioacchino Egizio, started a beverage business in the family home in the 600 block of Front Street in Allentown, and later built a small manufacturing facility behind the home. Their mother, Vincenza Munjone, also came from a family involved in the beverage business in Allentown. In 1932, the Egizio brothers moved the business to Union Boulevard in East Allentown, where it remains to this day. Joseph C. Egizio served as the board chairman of A-Treat Bottling Co. until retiring in 1989. He died in 2000, at the age of 96. John L. Egizio, who had started working at the company at the age of 13 delivering sodas on his bicycle, served as vice president and co-owner until his death in 1990.