AWWA – Cross-Connection Control Specialist Exam 1 – Full Question Bank with Verified Answers and Explanations

AWWA – Cross-Connection Control
Specialist Exam 1,2and3 – Full Question
Bank with Verified Answers

AWWA Cross-Connection Control Specialist Exam 1
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1. A cross-connection is defined as:
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• A) Any physical connection between a potable water system and any non-
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potable source. mn




• B) Any connection between two different pipe materials.
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• C) A connection between a fire sprinkler system and a domestic water line.
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• D) A pipe that crosses over a sewer line.
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2. Backflow is the unwanted reversal of flow in a piping system. The two main types o
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f backflow are:
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• A) Gravity and Pressure.
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• B) Backpressure and Backsiphonage.
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• C) Direct and Indirect.
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• D) Thermal and Hydraulic.
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3. Backsiphonage occurs when:
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• A) The downstream pressure is greater than the supply pressure.
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• B) A pump is used to increase pressure in the system.
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• C) The supply pressure drops below atmospheric pressure, creating a partial vacuum.
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• D) Water hammer causes a pressure surge.
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4. A hose bib (garden hose) connected to a chemical sprayer without a backflow preve
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nter is an example of:
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, • A) A potential cross-connection and a high health hazard.
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• B) An indirect waste connection.
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• C) An air gap separation.
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• D) A reduced pressure zone assembly.
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5. An air gap separation is considered the most reliable method of backflow preventio
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n because:
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• A) It is the cheapest method to install.
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• B) It provides a physical break between the water supply and the receiving vessel, wit
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h no moving parts.
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• C) It is the only method approved for all hazards.
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• D) It requires no maintenance.
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6. What is the minimum required vertical distance (air gap) between the outlet of a w
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ater supply pipe and the flood-level rim of a fixture?
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• A) At least 1 inch.
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• B) At least twice the diameter of the supply pipe.
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• C) A distance equal to the diameter of the supply pipe, but never less than 1 inch.
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• D) At least 6 inches.
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7. A Reduced Pressure Zone (RPZ) Assembly is used for protection against:
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• A) Only backsiphonage.
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• B) Only backpressure.
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• C) Both backsiphonage and backpressure.
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• D) Neither, it is only used for fire systems.
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8. The key component that distinguishes an RPZ assembly from a Double Check Valve
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Assembly (DCVA) is the: mn mn mn

, • A) Check Valve.
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• B) Gate Valve.
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• C) Relief Valve.
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• D) Test Cocks.
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9. Which backflow prevention assembly is best suited for continuous, high-
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hazard, non-health hazard applications?
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• A) Atmospheric Vacuum Breaker (AVB).
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• B) Double Check Valve Assembly (DCVA).
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• C) Reduced Pressure Zone Assembly (RPZ).
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• D) Pressure Vacuum Breaker (PVB).
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10. An Atmospheric Vacuum Breaker (AVB) must be installed:
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• A) At any elevation.
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• B) At least 6 inches above the highest downstream piping or outlet.
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• C) At least 12 inches above the highest downstream piping or outlet.
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• D) Below the flood-level rim.
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11. A Pressure Vacuum Breaker (PVB) is similar to an AVB but:
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• A) Is smaller and cheaper.
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• B) Can be used under continuous pressure and has spring-loaded check valves.
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• C) Is only used for underground applications.
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• D) Does not need to be installed above the downstream piping.
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12. Which of the following devices is NOT approved for protection against backpressu
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re?

• A) Reduced Pressure Zone (RPZ).
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• B) Double Check Valve Assembly (DCVA).
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, • C) Atmospheric Vacuum Breaker (AVB).
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• D) Reduced Pressure Detector Assembly (RPDA).
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13. A "High Health Hazard" is defined as:
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• A) A condition that could cause a minor illness.
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• B) A condition that could cause death or a major illness to the consumer.
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• C) A condition that only affects the taste or odor of the water.
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• D) A condition that only damages plumbing.
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14. The primary purpose of a cross-connection control program is to:
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• A) Reduce water consumption.
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• B) Protect the public potable water supply from contamination.
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• C) Increase water pressure in the distribution system.
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• D) Ensure proper drainage of wastewater.
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15. Who bears the ultimate responsibility for protecting the public water system from
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cross-connections?

• A) The plumber who installs the piping.
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• B) The property owner.
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• C) The water purveyor (utility).
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• D) The state health department.
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16. The "Degree of Hazard" refers to:
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• A) The physical difficulty of installing a backflow preventer.
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• B) Whether the potential contaminant is toxic (health hazard) or objectionable (non-
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• C) The age of the plumbing system.
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• D) The distance between the cross-connection and the water meter.
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