BACKFLOW PREVENTION FINAL EXAM QUESTIONS AND ANSWERS

1. Backflow is defined as: a) the pressure in the distribution piping of the potable water supply b) the undesirable reversal of water, other liquids, gases or substances in the distribution pipes of the potable water supply c) high pressure in the pipes of the water user d) excess pressure through a pressure regulator - Answer-b) the undesirable reversal of water, other liquids, gases or substances in the distribution pipes of the potable water supply 2. Primary responsibility for cross connection control is vested in a) the water purveyor b) the water site supervisor c) the health department d) the State Health department - Answer-a) the water purveyor 3. A reduced pressure principle backflow prevention assembly is comprised of: a) two independently operating air inlet valves with a hydraulically operating mechanically independent differential relief valve b) two check valves, two shut off valves and an air relief valve c) two independently acting approved check valves, a hydraulically operated differential pressure relief valve, with four appropriately located resilient seated test cocks and two resilient seated shut off valves d) two independently operated approved check valves, mechanically operated air relief valve, four resilient seated test cocks between two resilient seated shut off valves - Answer-c) two independently acting approved check valves, a hydraulically operated differential pressure relief valve, with four appropriately located resilient seated test cocks and two resilient seated shut off valves 4. A local ordinance establishing a cross connection control program must require that: a) the property owner test the assembly periodically b) a certified tester test the assembly at least once every twelve months and report the test results to the water purveyor it a timely manner c) the water purveyor will install the necessary cross connection control assembly d) pressure vacuum breaker will be installed at all service connections - Answer-b) a certified tester test the assembly at least once every twelve months and report the test resu