Concerns in our area surrounding COVID-19 are evolving each day. In order to follow the Governor's restrictions on higher education, all BAT professional growth exams at all sites throughout Washington State have been canceled through September 30, 2020.

We are not accepting enrollment into any professional growth examinations at this time.

We will update this message as the situation continues to evolve

Emailing WCS at to inquire about BAT exams will be the fastest and most efficient way to get a hold of us during this time.

Backflow Assembly Tester

Professional Growth Requirement

The Waterworks Operator Certification regulation, WAC 246-292-090(4), requires the holder of a Backflow Assembly Tester (BAT) certification to demonstrate professional growth by passing the Department of Health’s (DOH) BAT professional growth examination during each reporting period. Washington Certification Services schedules and administers the professional growth examination.

All certified BATs are assigned a professional growth reporting period based on their original certification date. DOH allows each BAT a minimum of three years to meet the professional growth requirement by passing the professional growth examination. This examination may be taken at any time during the reporting period dates, but must be passed by the reporting period deadline date.

If an applicant fails the professional growth examination they will be required to reapply, pay all applicable fees, and take the examination again. DOH highly recommends that individuals refrain from testing until such time as they have passed the professional growth examination. However, it is not required that they stop testing unless they are notified that they no longer hold an active certification.

The following timetable indicates when a certified BAT must meet the professional growth requirement.

If Your Original Certification Date Is Then You Must Meet The Professional Growth Requirement Between:
Before 1/1/2016 1/1/2019 and 12/31/2021 and in each 3-year reporting period thereafter.
Between 1/1/2016 and 12/31/2018 Your original certification date and 12/31/2021 and in each 3-year reporting period thereafter.
Between 1/1/2019 and 12/31/2021 Your original certification date and 12/31/2024 and in each 3-year reporting period thereafter.