Becoming a certified backflow tester in Washington
WAC 246-292-070(3), Washington State Department of Health.
Getting certified in Washington
WAC 246-292-060(5).
WAC 246-292-090(1). Annual renewal fee for a BAT is $83 per the fee table (WAC 246-292-995).
WAC 246-292-095(2) and 246-292-010.
WAC 246-292-034(7)(b).
Source: Certification exam: computer-based exam plus a department practical exam
Common questions
Who certifies backflow testers in Washington?
WAC 246-292-070(3), Washington State Department of Health.