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Backflow Tester and Repair Questions and Answers with
100% Complete Solutions UPDATED!!!
Backflow - ANSWER anything that causes the water to flow in
the opposite direction; the reversal of the normal direction of
flow.
When does backflow occur? - ANSWER whenever the pressure
from the customer becomes greater than the pressure in the
public water distribution system.
Backsiphonage - ANSWER backflow that occurs whenever a
cross-connection exists and a negative or reduced pressure is
generated in the public water supply.
Cross-connection - ANSWER an actual or potential connection
between a potable water supply and any non-potable substance
or source.
Potable water - ANSWER water that is chemically, biologically
and radiologically safe and is aesthetically pleasing.
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Non-potable water - ANSWER any liquid, gas or other substance
that can be diluted, dissolved, suspended or mixed in water that
adversely affects the quality of water
Examples of non-potable water - ANSWER industrial water, well
water and irrigation water
Air gap - ANSWER the unobstructed vertical distance through
the free atmosphere between the lowest opening from any
opening or faucet supplying water to a tank, plumbing fixture,
or other device and the flood level of the receiving vessel.
Contaminant - ANSWER any substance that when introduced
into water can adversely affect human health.
Pollutant - ANSWER any substance that when introduced into
the water does not adversely affect human health but does
affect the aesthetic quality of the water.
Containment program - ANSWER refers to placing of a backflow
preventer just downstream of the water meter thereby
containing any contamination that may occur within a plumbing
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system to that system and preventing the contamination from
spreading to the water distribution piping.
Isolation program - ANSWER refers to placing a backflow
assembly at the point of use within the customer's plumbing
system.
American Water Works Association (AWWA) - ANSWER
recognizes that the water purveyor has the responsibility to
provide customers at the service connection with water that is
safe under all foreseeable circumstances.
Who has the primary responsibility to prevent backflow? -
ANSWER Water purveyor
Where does the customer's responsibility begin? - ANSWER at
the point of delivery from the public water system and includes
all of his/her plumbing system.
Texas Commission on Environmental Quality (TCEQ) - ANSWER
responsible for promulgating and enforcing laws, rules,
Backflow Tester and Repair Questions and Answers with
100% Complete Solutions UPDATED!!!
Backflow - ANSWER anything that causes the water to flow in
the opposite direction; the reversal of the normal direction of
flow.
When does backflow occur? - ANSWER whenever the pressure
from the customer becomes greater than the pressure in the
public water distribution system.
Backsiphonage - ANSWER backflow that occurs whenever a
cross-connection exists and a negative or reduced pressure is
generated in the public water supply.
Cross-connection - ANSWER an actual or potential connection
between a potable water supply and any non-potable substance
or source.
Potable water - ANSWER water that is chemically, biologically
and radiologically safe and is aesthetically pleasing.
,2|Page
Non-potable water - ANSWER any liquid, gas or other substance
that can be diluted, dissolved, suspended or mixed in water that
adversely affects the quality of water
Examples of non-potable water - ANSWER industrial water, well
water and irrigation water
Air gap - ANSWER the unobstructed vertical distance through
the free atmosphere between the lowest opening from any
opening or faucet supplying water to a tank, plumbing fixture,
or other device and the flood level of the receiving vessel.
Contaminant - ANSWER any substance that when introduced
into water can adversely affect human health.
Pollutant - ANSWER any substance that when introduced into
the water does not adversely affect human health but does
affect the aesthetic quality of the water.
Containment program - ANSWER refers to placing of a backflow
preventer just downstream of the water meter thereby
containing any contamination that may occur within a plumbing
, 3|Page
system to that system and preventing the contamination from
spreading to the water distribution piping.
Isolation program - ANSWER refers to placing a backflow
assembly at the point of use within the customer's plumbing
system.
American Water Works Association (AWWA) - ANSWER
recognizes that the water purveyor has the responsibility to
provide customers at the service connection with water that is
safe under all foreseeable circumstances.
Who has the primary responsibility to prevent backflow? -
ANSWER Water purveyor
Where does the customer's responsibility begin? - ANSWER at
the point of delivery from the public water system and includes
all of his/her plumbing system.
Texas Commission on Environmental Quality (TCEQ) - ANSWER
responsible for promulgating and enforcing laws, rules,
