Relating to requiring backup generation at certain wastewater treatment facilities.

HB 3535 requires operators of small wastewater treatment facilities (defined as "package plants" with capacity under 500,000 gallons per day) to create and submit emergency plans for extended power outages lasting over 24 hours. The bill mandates that these plans must include specific backup solutions like auxiliary generators, mutual aid agreements with other facilities, or on-site power systems. Operators must demonstrate their ability to maintain wastewater treatment during outages, with the Texas Commission on Environmental Quality reviewing and approving these plans within 90 days. The law directly affects small wastewater plant operators across Texas, aiming to ensure continued service during power disruptions.