Water Distribution Grade 1 Certification ADEQ Practice Exam Questions with Answers

Water Distribution Grade 1 Certification ADEQ Practice Exam Questions with Answers What is the general definition of an ion? An _________ with a positive or negative charge A continuous positive pressure in a distribution system is essential for preventing what event? _____________ water pressure must be maintained to ensure adequate customer service during peak flow periods. However, minimum positive pressure must be maintained in mains to protect against backflow or backsiphonage from cross-connections. Name the most common CAUSE for public water supply contamination. _________________ or cross-connection What does a backsiphonage condition usually cause? __________ pressure or negative pressure on the service or supply side. What does a double check valve backflow assembly provide effective protection from? Both backpressure and backsiphonage of ____________. What is equipment that utilizes water for cooling, lubrication, washing or as a solvent always susceptible to? What is the difference between a reduced pressure principle backflow device and a double check backflow device? The RP has a ______________. What is the maximum time period between having a backflow device tested by a certified backflow tester? ______________ year. What is the regulatory definition of a cross-connection in a water supply? A physical connection between a public water system and any source of water or other substance that may lead to contamination of the water provided by the _____________ through backflow. What is the name of a type of valve that reduces the differential pressure across a closed disk making the main valve easier to open and close?