Understanding Backflow Prevention Programs
Some agencies, through the enforcement of the Federal
Clean Water Act, were given the task of protecting our potable water supplies.
It clarified that water purveyors must protect the public water supply
from contamination by an outside source, through implementation of a Backflow
Conformance to these state requirements minimizes
the possibility for the water using public to inadvertently contaminate
or pollute the domestic water system or the public water supply.
This program requires the installation of a backflow
prevention device in the plumbing system where the possibility of a cross
connections may take place. A cross connection. is an arrangement of piping
or faucets which allows the potable water supply to come into contact
with a contaminant.
An example of a potential cross connection is a lawn
irrigation systems, where fertilizers, chemicals or other contaminants
can come into contact with the potable water supply through the irrigation
There are several types of backflow prevention devices
used today. The type of device is determined by the degree of hazard presented
by the possible "cross connection".