California Code, Health and Safety Code - HSC § 41815

Notwithstanding any local ordinance adopted pursuant to Section 37100 of the Government Code or by charter provision to prohibit the burning of waste materials, the burning of the gaseous byproducts of the recycling of water by a waste water treatment facility as part of an energy conservation and cost reduction program to generate power to operate the facility shall be permitted if the burning operation complies with all regulations of the district having jurisdiction and any other applicable provisions of state law.