San Francisco Mandatory Recycling and Composting Ordinance
The San Francisco Mandatory Recycling and Composting Ordinance (No. 100-09) is a local municipal ordinance requiring all persons located in San Francisco to separate their recyclables, compostables and landfilled trash and to participate in recycling and composting programs.
Source: Wikipedia — San Francisco Mandatory Recycling and Composting Ordinance (CC BY-SA 4.0)