The Helium Law in California refers to a set of regulations that govern the sale and usage of helium-filled balloons. The law, specifically California Balloon Law (California Senate Bill No. 1499), was enacted to prevent power outages and other safety hazards caused by metallic or Mylar balloons filled with helium. According to this law, it is mandated that all helium-filled metallic balloons sold in California must have a weight attached to prevent them from floating away and causing potential damage to power lines. Additionally, it is illegal to release these balloons outdoors intentionally. Violation of this law can result in fines or penalties. This law is particularly important for event planners to keep in mind when planning celebrations or gatherings where helium balloons might be used.