SPECIALIST AND TESTER FINAL EXAM
SCRIPT 2026 COMPREHENSIVE QUESTIONS
AND ANSWERS VERIFIED A+
●● A substance that could cause a public health hazard is a(n): Answer:
High health cross connection
●● Thermal expansion in a closed plumbing system can: Answer: Be a
safety issue
●● What is adequate premises isolation for high health cross connection
hazard facility? Answer: RPBA and Air Gap
●● What are three types of hazards associated with cross connections
and backflow? Answer: Physical, Biological and Chemical
●● The critical level marking on a vacuum breaker can be used as:
Answer: A measuring point for minimum distance above the highest
downstream piping.
●● If the CCS is denied access or restricted access for a survey, it is
most common to: Answer: Require an RPBA at the service connection
, ●● According to the Washington Administrative Code (WAC), the
purpose of a cross connection control program is to: Answer: Protect
public eater systems from contamination and pollution due to cross
connections.
●● The term " low cross connection hazard" refers to a substance that:
Answer: Is aesthetically displeasing
●● According to the WAC, if a high health cross connection hazard is
identified, appropriate protection must be installed within: Answer: 90
days or on an alternate schedule acceptable to the water purveyor.
●● According to the WAC, who must inspect backflow assemblies after
installation to ensure the protection is commensurate with the degree of
hazard? Answer: A Cross Connection Specialist
●● All assemblies used to fulfill the requirements of the WAC must be
on the: Answer: USC list of approved assemblies
●● According to the WAC, who can inspect backflow assemblies for
correct installation? Answer: Back Flow Assembly Testers and Cross
Connection Specialists