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Backflow Tester and Repair Questions and Answers 100% Verified | Updated
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Backflow Tester and Repair Questions and Answers 100% Verified | Updated
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Backflow Tester and Repair Questions andAnswers 100% Verified | Updated 2024-2025
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.
Back siphonage - 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.
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 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, regulations and policies to be followed
for an effective cross-connection control program.
Arkansas Department of Health Engineering Section - ANSWER
responsibility for promulgating and enforcing laws, rules, and policies to be
followed for an effective cross-connection control program.
Arkansas Department of Health Plumbing and Natural Gas - ANSWER
responsible for promulgating and enforcing laws, rules, regulations and policies to
be followed for preventing backflow within and from plumbing systems.
Examples of biological contaminants - ANSWER bacteria, viruises,
protozoan's and algae
Examples of chemical contaminants - ANSWER mercury, arsenic and lead
Define inorganic compounds - ANSWER metals or other compounds that do
not contain carbon
University of Southern California Foundation for Cross-Connection Control &
Hydraulic Research (USC FCCC & HR) sets what standards? - ANSWER list of
approved assemblies; conducts extensive lab test and field trials
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