Backflow Questions and Answers
Public Health Service
Drinking water standards in the united states were first est. by the
1966
The AWWA's manual of recommended practice about backflow prevention was first published in
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Public Health Service - answer Drinking water standards in the united states were first
est. by the
1966 - answer The AWWA's manual of recommended practice about backflow
prevention was first published in
Cross-connection survey - answer The USEPA's Total Coliform Rule contains
requirements for
3 - answer Sanitary surveys must be conducted by community water supplies every
______ years
funded mandate - answer At the federal regulatory level, cross-connection controls is
not a
federal standards - answer Under federal law, citizens can sue a water supplier if the
quality does not meet
free flowing tap - answerUtilities are responsible for the waters quality to the last
check valve - answerIn 1925 the AWWA determined that _______________ were not
adequate protection
15,000 - answerA federal court can assess a civil penalty for maintaining a hazardous
connection of up to $___________ per day
5,000 - answerIn 1898, A water utility was fined $_________ for supplying poor water.
6 - answerA flushometer vacuum breaker must be installed above the fixture a min of
______ inches
interconnected - answerAccording to the Uniform Plumbing Code, in buildings where
potable water and non potable water systems are installed, each system shall be
certified backflow tester - answerThe Uniform Plumbing code requires backflow
preventers to be tested by a
1 - answerThe critical installation level for a water closet ball cock is ______ inches
toxic fumes - answerA backflow preventer may not be located in an area containing
, Green and white lettering - answerThe United Plumbing Code color code for potable
water pipe labels is
not to be allowed under any condition - answerThe United Plumbing code states that a
direct connection between the potable water piping and sewer connected waste shall
repaired, installed, relocated - answerAccording to Uniform plumbing Code backflow
prevention assemblies shall be tested
72 - answerAccording to Uniform plumbing code, vacuum breakers fpr hose
connections in health care or laboratory areas should be not less than _______ inches
above a floor
Double check valve assembly (DCVA) - answerThe backflow preventer not allowed on
an irrigation system is a
back flow protection - answerA single check valve does not provide
spring loaded check valve - answerA hose bib vacuum braker contains a
Atmospheric Vacuum Breaker (AVB) - answerFlush tanks contain a specialized type of
negative supply pressure and elevated downstream pressure - answerA duel check
valve provides protection against
expansion tank - answerWhen a backflow preventer is installed as containment
protection on a water service it is recommended that the plumbing system contain a
in line testable - answerA duel check valve is not
low pressure residential boiler - answerAn application for a dual check with an
intermediate atmospheric vent is a
submerged - answernever permit a backflow preventer to be installed where it can be
toxic fumes - answerBackflow preventers that open to atmosphere must not be installed
in areas with
commercial boilers - answerA duel check valve with an intermediate vent shall not be
installed on a
annually - answerAn air gap separation must be inspected
1 - answerWith the exception of a drinking fountain, an air gap separation must never
be less than ______ inchs
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