It shall be the responsibility of the owner of property where water is consumed, to purchase, install, test and maintain approved backflow prevention devices or assemblies wherever it will be possible for used, unclean, polluted or contaminated water, mixtures, or substances to enter any portion of his/her potable water system, and to otherwise control cross-connections. Such owner shall have certified inspections and operational tests made at least once a year at the owner's expense. Where the City deems the hazard to be great, or where an assembly has a history of failing tests, the City may require the owner to have such inspections and tests at a more frequent interval as prescribed by the City. All such tests shall be made according to the standards set forth by the Idaho Department of Environmental Quality by testers licensed by the Idaho Bureau of Occupational Licenses. Test reports will be made in triplicate, with copies going to the owner, the City Water Department and one retained by the inspector for his/her records. (Ord. 271, 8-11-2016)