Dale Plumbing & Heating
Quality Plumbing & Heating Service Since 1958
(650) 369-DALE (3253)

Backflow Prevention


Testing, Certification, Repair, Replacement

A backflow prevention assembly is used to protect water supplies from contamination or pollution.


In water supply systems, water is normally maintained at a significant pressure to enable water to flow from the tap, shower etc. When pressure fails or is reduced as may happen if a water main bursts, pipes freeze, or there is unexpectedly high demand on the water system, the pressure in the pipe may be reduced and may allow contaminated water from the ground, from storage or from other sources to be drawn into the system. There are over 10,000 reported cases of backflow contamination each year. Some cases can be fatal.


Bay Area residents and businesses are now required to install backflow preventers in order to prevent potentially harmful drinking water. Call us today for a free estimate!

(650) 369-DALE (3253)