Deck 7: Protection of the Water Supply

Question 1

Double check valve assemblies are typically used for which of the following applications?

A)lavatories
B)drinking water fountains
C)swimming pools
D)lawn sprinklers with elevated heads

Answer 1

D

Question 2

Cross-connections can occur:

A)only where appliances are connected
B)anywhere in a potable water system
C)typically in commercial applications
D)only where plumbing fixtures are connected

Answer 2

B

Question 3

Which of the following is NOT one of the four methods through which cross-connections contaminate a system?

A)forward-pressure
B)gravity
C)back-siphonage
D)direct connection

Answer 3

A

Question 4

A contaminated water supply would feature which of the following issues?

A)contains a toxic substance
B)impaired taste
C)malicious odors
D)discoloration

Question 5

In what way do RPZs differ from air gaps?

A)protect against back-pressure
B)protect against back-siphonage
C)require regular testing and maintenance
D)defend against contaminants

Question 6

The plumbing professional's greatest responsibility is:

A)customer service
B)ensuring the use of quality parts
C)protecting the potable water system
D)diagnosing plumbing problems

Question 7

The Safe Drinking Water Act was passed by Congress in 1974 and amended in 1986 and 1996.

Question 8

Which of these can be considered a "throw-away" item and not testable in the field?

A)pipe-connected vacuum breakers
B)air gaps
C)RPZs
D)hose-connected vacuum breakers

Question 9

Which of the following is covered by some codes as a matter of theory?

A)air gaps
B)barometric loops
C)RPZs
D)vacuum breakers

Question 10

Which of the following provides the least amount of cross-connection prevention?

A)air gap
B)vacuum breaker
C)air break
D)RPZ

Question 11

Which of the following cross-connection contamination methods usually happens when water distribution systems are either installed or repaired?

A)direct connection
B)back-siphonage
C)direct connection
D)forward-pressure

Question 12

Air gaps provide the least amount of cross-connection prevention.

Question 13

Dishwashers typically have an air gap built in after the water supply valve as well as a secondary air gap on the discharge side.

Question 14

Of the following, which is considered to be the one fool-proof, maintenance-free cross-connection protection method?

A)vacuum break
B)air gap
C)air break
D)RPZ

Question 15

Which of the following will vacuum breakers protect against?

A)siphoning effects
B)back-pressure backflow
C)reduced pressure zones
D)overflow