No water service connection to any premises shall be installed or maintained by the water district unless the water supply is protected as required by state regulations and this Part 1.
Service of water to any premises may be discontinued by the water district if a backflow prevention device required by this Part 1 is not installed, tested and maintained; if any defect is found in an installed backflow prevention device; if it is found that a backflow prevention device has been removed or bypassed; or if unprotected cross-connections exist on the premises, and service will not be restored until such conditions or defects are corrected.