HB 479 puts the state in charge of all rules on water quality, water use, pollution control, spill prevention and cleanup, and wetlands. Cities and counties could no longer pass their own environmental rules. They may still run their drinking water, wastewater, and stormwater systems and join shared programs with other agencies. If they break this law, the state can withhold their funds. The bill also ends land management review teams. Effective July 1, 2026.