(1) No part of the backflow prevention device shall be submerged in water or be installed in a location subject to flooding. If installed in a vault or basement, adequate drainage shall be provided.

(2) Devices must be installed at the point of use and/or point of delivery of the water supply. Alternate locations must be approved in writing by the Town of Garfield prior to installation.

(3) The device must be protected from freezing and other severe weather conditions which may cause it to fail or function improperly.

(4) All backflow device prevention assemblies shall be of a type and model approved by the Washington State Board of Health and the Town of Garfield.

(5) The device shall be readily accessible with adequate room for maintenance and testing. Devices 2" and smaller shall have at least 6" clearance on all sides of the device. All devices larger than 2" shall have a minimum clearance of 12" on the back side, 24" on the test cock side, 12" below the device and 36" above the device. “Y” pattern double check valve assemblies shall be installed so that the checks are horizontal and the test cocks face upward.

(6) The property owner shall be responsible for all maintenance and testing of the device, as determined and required by the Town of Garfield.

(7) Town of Garfield or its representative must have reasonable access to all devices during regular working hours of 8:00 a.m. to 5:00 p.m., Monday through Friday.

(8) If a device is installed inside of the premises and is 4" or larger and is installed 4' above the floor, it must be equipped with a rigidly and permanently installed scaffolding acceptable to the Town of Garfield. This installation must all meet the requirements set out by the U.S. Occupational Safety and Health Administration and the State of Washington Occupational Safety Health Codes.

(9) Backflow preventive devices may be installed in a vault only if relief valve discharge can be drained to daylight through a “boresight” type of drain. The drain shall be of adequate capacity to carry the full rated flow of the device and shall be screened on both ends.

(10) An approved air gap shall be located at the relief valve orifice. This air gap shall be at least twice the inside diameter of the incoming supply line as measured vertically above the top rim of the drain and in no case less than 1".

(11) Upon completion of installation, the Town shall be notified and all devices must be inspected and tested. All backflow devices must be registered with the Town. Registration shall consist of date of installation, make model, serial number of the backflow device, and initial test report.

(12) All new construction shall install an approved backflow device at the service connection. (Ord. 282-N, §6, 2001)