Tribal Water Infrastructure Grants Expansion Act

This bill allocates $30 million annually (from existing funds) plus $500 million yearly (2026-2031) specifically for tribal water infrastructure projects. It provides direct grants to federally recognized tribes for clean water treatment systems, maintenance, and related training without requiring tribes to cover project costs. Funds can support construction, operation, and management of water systems on tribal lands, aligning with existing federal water pollution control programs. The legislation targets tribes as the direct beneficiaries of these expanded funding streams.