No water service connection to any premises shall be installed
or maintained by the water purveyor, unless the water supply is protected
as required by state regulations and these rules.
Service of water to any premises may be discontinued by the
water purveyor if a backflow preventive device required by these rules
and regulations is not installed, tested and maintained; if any defect
is found in an installed backflow preventive device; if it is found
that a backflow preventive device has been removed or bypassed; and
if unprotected cross-connections exist on the premises. Service will
not be restored until such conditions or defects are corrected.
The provisions of §
51-5G shall not be retroactive.