People rely on safe, pure water every day. We assume that
when we open our faucets we will receive water that is clean and
free of contamination. Backflow prevention protects the public
water supply by separating the private water lines inside homes
and businesses from the public water system. If something
goes wrong and the water inside a private home or business becomes
contaminated, the backflow prevention system prevents the contamination
from spreading to the entire water system. It is based on
the principle of containment, a standard operating principle that
ensures the safety of all of the water system’s customers.
Northwestern Water & Sewer District’s
backflow prevention program includes an on-going process of investigation
and on-site surveys to ensure that every connection to the public
water system includes adequate safeguards. These investigations
and surveys determine if actual or potential cross-connections
could allow pollutants or contaminants to enter the general water
supply. Specifically, the backflow prevention program ensures that
our customers have the appropriate backflow assembly installed
as determined by the degree of hazard.
The following links contain further information
regarding the District’s backflow program:
(Includes details for air gap separation & thermal expansion control)
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