OSHA and Cal/OSHA Porta Potty Requirements for Construction Sites
Updated October 2026 · By Daniel Tom, owner, Bay Area Sanitation Short answer: In California, Cal/OSHA requires at least one toilet for every 20 employees of each sex, plus one hand washing station for every 20 employees, on top of the federal OSHA rule. Crews of fewer than five can share one single-user all-gender unit. […]