California Code, Public Resources Code - PRC § 5411

All public agencies operating playgrounds, including state agencies, cities, counties, a city and county, school districts and other districts, shall, with respect to new playground equipment purchased on or after January 1, 1979, provide that a portion of the equipment within the playground is accessible and usable by all persons regardless of their physical condition whenever such equipment is available at a quality and cost which is comparable to the quality and cost of standard equipment.