To end a labor dispute that’s halted work on one of the largest and most important water projects in San Diego history, Assemblyman Todd Gloria rolled out a bill Friday to require union-friendly terms for work on the project.

The project, known as Pure Water, would provide a third of the city’s drinking water in coming decades. After years of starts and stops, the first $1.6 billion part of the project looked to be on track, until a labor dispute put everything on ice this summer.