(1) All water system connections to serve buildings or properties with domestic potable water, fire sprinkler systems, or irrigation systems shall comply with the minimum backflow requirements as established by the Snohomish County health district and the city of Stanwood.

(2) Backflow devices required to be installed shall be a model approved by the State Department of Social and Health Services and shall be tested annually.

(3) All irrigation systems shall be installed with an approved backflow prevention assembly.

(4) Submission of the certificate for testing of any backflow prevention device to the Stanwood public works department is required before the certificate of occupancy will be issued on any building. (Ord. 1405 § 1 (Exh. 1), 2015; Ord. 721 § 7, 1987).