(A) Services to single family residential units, not otherwise required by this code to have other containment devices, may have a containment device in the form of an approved dual check valve on all such services which meters are applied more than 90 days following the date of adoption of this chapter, said dual check valves or other containment devices as required shall be installed by the owner's representative prior to the installation of the meter by the Public Works Department. On all such services for which meters have been applied prior to that date, said dual check valve shall be installed by the Public Works Department, provided that the town reserves the right to charge the owner or occupant of any residence for the cost of said device and its installation. Maintenance of dual check valve containment devices installed in accordance with this section shall be conducted by the Public Works Department. Testable containment devices that are required on lawn irrigation water systems and must be tested every three years by a contractor that has been approved by the town.
(B) All other connections to the public water supply of the towns shall have containment devices in the form of a double check valve backflow prevention device as set forth in § 51.105 this chapter. This shall include water mains installed to town standard, and with town supervision, but which are not maintained by the town including but not limited to manufactured home parks, apartments, group housing projects, and other private distribution systems, or similar hazard potential as determined by the Public Works Director, or his or her authorized representative. Private distribution systems shall be configured so as to provide looped mains, with two or more containment devices on each building water service connection and at dead-end branch mains.
(1989 Code, Title III, Ch. 30, § 7-8) (Ord. passed 12-11-2007; Ord. passed 2-10-2009)