(a) The Federal Safe Drinking Water Act of 1974 and Article 3 of the
Virginia Department of Health Waterworks Regulations provide that the water purveyor has
the primary responsibility for preventing water from unapproved sources, or any other
substance, from entering public or private potable water systems.
(b) Public and private water systems shall be designed, installed, and
maintained in such a manner as to prevent contamination from being introduced into the
potable water supply through cross-connections or any other manner of connection.
(c) Water systems shall be protected against backflow by the
installation and maintenance at all fixtures, equipment and outlets where backflow may
occur, a suitable backflow prevention device as required by this chapter.