This group of people recently declared that THC in cannabis is a risk to pregnant women and could cause a world of problem for cannabis businesses operating within the state. This is because it falls under Prop. 65 or better known as the Safe Drinking Water and Toxic Enforcement Act, which requires labeling warnings for chemicals which are deemed “dangerous” and “allows residence, advocacy groups and attorneys to sue on behalf of the state and collect a portion of civil penalties for failure to provide warnings” – Source