A coalition of environmental groups, lawmakers and employee unions will seek $1 billion or more in funding from a potential capital bill this year to update the state’s aging water infrastructure.

Discussions of the state’s first capital projects bill in 10 years are in a fledgling state, and the list of requests for infrastructure improvements to roads, bridges, state-owned college and university buildings, and other deferred maintenance projects has been seemingly endless since new Gov. J.B. Pritzker took office.