Spray Hose In Sink
This type of cross connection
is commonly found in the food
industry and in janitor's sinks.
A hose has been connectec
to the faucet on the sink.
When the faucet is left
running, a loss in pressure of

. the supply main can siphon

: this used water back into the

‘ potable water system.

Submerged Iniets

in many industrial installations
that use chemically treated
baths, the make-up water line
runs directly into the tarik. If
there is backsiphonage, the
toxic chemicals can be
sucked back into the potable
water system.

Hose Bibs

At first glance, a hose bib
seers innocuous, but itis the
things people do with the
hose that creates problems.
In this example, a man is
trying to blow a stoppage out
in a sewer line, but witha
sudden drop in line pressure,
this contaminated water can
be backsiphoned into the
potable water system.

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Potable
Water Line

Water Line