The water purveyor has the primary responsibility to prevent water from unapproved sources entering the public water supply system. Each service connection from a public water system supplying water to premises having an auxiliary water supply (well) shall be protected against backflow of water from the premises into the public water system by the installation of a city-approved reduced pressure principle backflow prevention device installed at the public water supply meter connection. It shall be the responsibility of the water user to provide protective devices as required under this code. It shall be the duty of the water user on any premise for which backflow protective devices are installed to have a competent licensed inspection and test performed at least once per year at the expense of the water user.
(California Administrative Code Title 17)
(Ord. 18-11, passed 12-11-2018)