ABSTRACT
The vast majority of states require some sort of cross connection control program, either through regulations or guidelines, although the requirements and the authority to implement them vary considerably in terms of how detailed a water system’s program must be, the types of water systems required to have a program, and the role the states play in implementing and maintaining a program. Some states rely solely on plumbing codes to address cross connections and backflow, which may not require testing and follow-up inspections of backflow prevention devices. A number of states do not go beyond minimum requirements or require public water systems to administer any type of cross connection control program at the local level.
