Are plastic bags labeled or sold as “compostable” or “bioplastic” or “biodegradable” allowed as reusable bags?

The Alameda County Reusable Bag law requires a “reusable bag” to meet certain performance criteria, as verified by an independent laboratory, to be considered compliant.  Plastic bags labeled or sold as “compostable” or “bioplastic” or “biodegradable”  generally do not meet the specifications of a compliant reusable bag under the Alameda County law.  BPI-certified compostable plastic bags as well as bags that meet the State definition of 'Compostable' do NOT meet the Alameda County reusable bag requirements. Contact staff at if you have questions regarding these bag types.