Village of Potomac Boil Order 07/20/2020 Posted About Four Years Ago by WHPO Village of Potomac 310 W State Street Potomac, IL 61865 217-987-6900 For the North East Section of Potomac, IL. Vermilion St., Grant St., May St., and Lane St. from State Street to North Street until further notice due to a water main break. Read All