Chemical leak prompts mass evacuations in Garden Grove, California

On May 23, 2026, a leak from a storage tank containing 26,000 liters of methyl methacrylate occurred in Garden Grove, Orange County, Southern California. The substance is a flammable liquid used in plastic manufacturing, prompting concerns about a potential explosion or toxic gas release. Fire department official Craig Covey stated that the evacuation was necessary to prepare for the risks of the tank rupturing or exploding. Approximately 40,000 residents were ordered to evacuate their homes, although local police chief Amir El Farah noted that some individuals chose to remain in the area despite the order. Emergency crews have installed barriers to prevent environmental contamination of rainwater and rivers flowing toward the ocean. Firefighters are continuously spraying the tanks with water to cool them, though the cause of the leak, which began on Thursday, has not yet been determined. No casualties have been reported by local authorities as of the latest update. Conflicting reports suggest a potential secondary risk to nearby fuel and chemical storage facilities.