Backflow Prevention Assembly - Permit (Cross Connection)

Cross Connection:

13.04.060 (B) Backflow Prevention Requirements:

Backflow Prevention Assemblies shall be installed on each service line of a customers system at or near property line or at “Point Of Use” in a facility being served, in all cases wherever any of the following conditions exist:

1. There is an existing auxiliary water supply which is, or could be, connected to potable water piping.
2. Where there is piping conveying liquid other than potable water and where that piping is installed and operated in a manner which could cause a cross connec tion.
3. There are cross connections or intricate plumbing which make it impractical to ascertain whether or not a cross connection exists.
4. In a case where there has been a history of repeating the same or similar cross connection or backflow, even though these have been removed or disconnected.
5. Where there is plumbing over two stories in height or any plumbing system that is greater than or equal to thirty feet above the water main from which it is served.
6. Where fire hydrants or “Stand-alone Fire Suppression Systems” are connected to the potable domestic water service within the property being served.
7. Where a single water service is used to supply three or more dwellings.
8. Where the water meter serving the property is one and one half inch or larger.
9. Where there is a “Backflow” or “Backsiphonage” potential.