(A) The installation of all backflow and cross-connection prevention devices shall be in accordance with the city's standard details, created and approved by the Director, and all provisions of this subchapter.
(B) An approved air gap separation assembly (AG) shall be installed as follows:
(1) The AG shall be located on the water customer's side of and as close to the point of service as is practicable.
(2) All piping from the point of service or the meter to the receiving tank shall be above grade and visible. Unless otherwise approved by the Director, the Director's designate, or the health agency, the receiving tank shall be located on the customer's side no further than five feet from the point of service or the meter.
(3) There shall be no outlet, tee, tap, takeoff or connection of any sort, to or from the service connection or the customer's water system, between the city's water main and the AG.
(C) An approved reduced pressure principle (RPP) assembly shall be installed as follows:
(1) Aboveground in a horizontal and level position. Unless otherwise approved by the Director, the Director's designate or the health agency, the RPP shall be located on the customer's side no further than five feet from the point of service or the meter.
(2) A minimum of 12 inches above finished grade but not more than 36 inches above finished grade as measured from the bottom of the RPP. The RPP shall be readily accessible for maintenance and testing.
(3) There shall be no outlet, tee, tap, takeoff or connection of any sort, to or from the service connection or the customer's water system, between the city's water main and the RPP.
(4) No part of the RPP shall be submerged during normal operation and weather conditions.
(D) An approved double check valve (DC) assembly shall be installed as follows:
(1) Unless otherwise approved by the Director, Director's designate or the health agency, the DC shall be installed aboveground, in a horizontal and level position and shall be located on the customer's side no further than five feet from the point of service or the meter.
(2) Unless otherwise approved by the Director, the Director's Designate or the health agency, the DC shall be installed a minimum of 12 inches above finished grade and not more than 36 inches above finished grade as measured from the bottom of the DC. The DC shall be readily accessible for maintenance and testing.
(E) An approved double check - detector check (DCDA) valve assembly shall be installed as follows:
(1) Unless otherwise approved by the Director, the Director's designate or the health agency, the DCDA shall be installed aboveground, in a horizontal and level position and shall be located on the customer's side no further than five feet from the point of service or the meter.
(2) Unless otherwise approved by the Director, the Director's designate or the health agency, the DCDA shall be installed a minimum of 12 inches above finished grade but not more than 36 inches above finished grade as measured from the bottom of the DCDA. The DCDA shall be readily accessible for maintenance and testing.
(3) There shall be no outlet, tee, tap, takeoff or connection of any sort, to or from the service connection or the customer's water system, between the city's water main and the DCDA.
(F) An approved backflow assembly shall have at least the same size diameter as the existing or proposed water meter unless otherwise approved in writing by the Director.
(G) Upon installation, the backflow prevention assembly shall be tested by a Los Angeles County certified backflow tester. Such testing shall be at the customer's expense.
(Ord. 1129, passed 6-20-23)