100+ Free Backflow Tester Practice Questions

The exam is moderately challenging with an estimated 60-75% first-time pass rate. The written portion (100 multiple-choice questions, 3 hours) requires thorough knowledge of hydraulic principles, assembly components, and field test procedures. The hands-on performance exam requires demonstrating proper USC 10th Edition test procedures on all four assembly types (RP, DC, PVB, SVB). Most candidates who complete the full 40-hour training course pass on the first attempt.

Both the ABPA and ASSE 5110 exams require a minimum score of 70% on the written examination. You must also pass the hands-on performance exam by correctly demonstrating the field test procedure for all four assembly types. Passing scores may vary by state for state-specific certification programs.

The ABPA exam fee is $300 for ABPA members and $330 for non-members. The required 40-hour training course typically costs $875-$2,000 depending on the provider and location. You will also need the USC Manual of Cross-Connection Control, 10th Edition (~$140) and a calibrated differential pressure test gauge. Total cost ranges from approximately $1,315-$2,470.

ABPA backflow tester certification is valid for 3 years from the date of issuance. To recertify, you must pass a 50-question written exam and a performance exam within 6 months prior to your expiration date. Some states may have different renewal periods (2-5 years depending on jurisdiction).

In most states, you do not need a plumbing license to become a certified backflow prevention assembly tester. The certification is a standalone credential. However, some jurisdictions may require a plumbing license for installation and repair of backflow assemblies. You need a high school diploma or GED, completion of an approved training course (30-40 hours), and passage of both the written and performance exams.

You must provide your own differential pressure test gauge and hand tools for the ABPA performance exam. Your test gauge must have its calibration checked within the last 12 months, and you may be required to show proof of calibration. Some training providers may allow use of on-site equipment during the course, but you should have your own gauge for the exam and for field work.

Both are nationally recognized backflow tester certifications. ABPA (American Backflow Prevention Association) and ASSE International (formerly American Society of Sanitary Engineering) each administer their own certification programs with similar content. Both require 100-question written exams and hands-on performance exams. Acceptance varies by state and local jurisdiction — check with your local water purveyor or administrative authority to determine which certification is required in your area.