Establishes municipal water infrastructure planning and design project grant program in DEP; appropriates $100 million.

This bill establishes a $100 million grant program within New Jersey's Department of Environmental Protection (DEP) to fund planning and design work for municipal water infrastructure projects. It provides grants up to $2 million per project to help towns and cities plan upgrades to drinking water, stormwater, and wastewater systems without requiring matching funds. The program prioritizes projects in "overburdened communities" and requires DEP to report annually on the program's effectiveness. The grants specifically cover the initial planning phase, helping municipalities access future federal and state funding for full infrastructure construction.