Frequently Asked
Questions:
What is
backflow?
Backflow is the undesirable
reversal of flow of non-potable
water or other substances into the piping of a public water system or consumer's
potable water system. (source:
Florida DEP)
What is a
Cross-Connection?
A cross-connection is any
temporary or permanent connection between a public water
system or consumer's potable (i.e., drinking) water
system and any source or system containing non-potable
water or other substances. (source:
Florida DEP)
Examples:
- a
submerged irrigation system after a heavy rain storm
- piping
between incoming city water and an industrial mixing
container
- a garden
hose submerged into mud on one end and connected to
a tap on the other end.
What is a backflow prevention
assembly (BFPA) and why do I have one on my property?
A BFPA, is a
type of automatic valve, that allows the water to flow through it only one
way. The purpose of the BFPA is to prevent
contaminated water or chemicals from flowing back into
the public water supply network. Many home
appliances for example are directly attached to your
water line, such as ice makers, dishwashers, wash
machines, water filtration/softener systems, irrigation
lines, water fountains, ponds, and pools. These are
potential sources of water that do not meet clean
drinking water specifications, and should be isolated
from the public network with the adequate backflow
prevention assemblies.
Why does my device need to be
tested every year?
BFPAs have rubber components,
seals, gaskets, springs, and valves that are subject to
deterioration over time. One average, 20% of the valves
tested yearly fail and need repair. This means that the
average valve will fail about once every 5 years.
For this reason, the manufacturers of BFPAs, most
cities, counties, and states require to test the devices
yearly.
Links to codes and
ordinances:
