Backflow Certification

GAWP Backflow Prevention Assembly Tester Certification

To obtain a GAWP Backflow Prevention Assembly Tester (GBPAT) Certification, you must take the appropriate course work, then take and pass the state exam. To help you with this process, we've compiled information on both of the steps that you will need to take in order to receive your license.


To obtain a Backflow Certification, please follow these two steps.


Obtain Training

To obtain the GAWP Backflow Prevention Assembly Tester (GBPAT) Certification, you must take a 32-hour basic Backflow Prevention Assembly Tester course. GWWI offers the (4-day) 32-hour Backflow Prevention Assembly Tester Training Course several times throughout the year. 


Register, Take, and Pass the GAWP Backflow Examination

Each student is responsible for scheduling for their own exam and paying the required exam fee. To register for the exam go to

Schedule, take, and pass (scoring 70 or above) the Backflow Prevention Assembly Tester Certification Exam.


Exam schedule/locations (exam fee is $102 and is payable to PSI/AMP when you register for the exam)

  • You are not permitted to take this exam if you have not completed the 32-hour course.
  • The exam has a 100 question written portion. If you do not pass the exam you must wait 30 days before retaking the exam.
  • An education level of a High School Diploma, GED or equivalent is required to take the exam.
  • If you are already registered for the 32-hour course, you may go ahead and register for the exam before you complete the course.

 Step 3

Apply for your Certification/License 

You have 180 days from the Examination Date on your Score Report from PSI/AMP to apply for your certification with GAWP. Go to to apply for your license.

Once your payment ($83.00) and application have been processed you will receive an email confirming this. Your Certification/BPAT#, Certification Letter with wallet card and Backflow Tester Certificate will be mailed in a large while envelope to the address you have provided in your application.