🏢Washington Safe Facilities — Question 9 of 20
Which method provides the most effective backflow prevention in plumbing systems?
Washington ServSafe Safe Facilities Test Info
Questions on Exam
~10 scored questions on the exam
Passing Score
75% overall (60/80)%
Time Limit
2 hours for the full exam
Certification Renewal
Every 5 years
Washington State Department of Health
Official Food Safety PortalReady to pass your Washington ServSafe Safe Facilities exam?
Get full practice exams, study mode, and simulated tests with detailed explanations.
Risk-free — cancel anytime, no charge until trial ends.
Study this on the go
