An Act relative to affordable housing and the preservation of a community's water resources

This bill amends Massachusetts' Chapter 40B housing law by redefining "consistent with local needs" for zoning regulations affecting low/moderate income housing. It explicitly requires that local requirements (like design or environmental rules) must protect water resources or open spaces, apply equally to all housing types, and be reasonable compared to regional housing needs. The definition applies when a community has over 10% low/moderate income housing (per census) or when a project would exceed specific land-use thresholds for new housing construction. This directly affects local zoning boards, developers, and communities determining housing project approvals. The change aims to balance housing development with resource protection while ensuring uniform application of regulations.