WHAT WE DO We provide conveniently scheduled backflow testing, repair and installation services to Western Washington. We pride ourselves on educating you, the water customer, on how to reduce the risk of inadvertently contaminating your private or public water supply. Pops Testing handles all of the paperwork and processing for your convenience. Copies of all necessary documents are sent to the water purveyor, a copy is left with you at the time of service and an additional copy is maintained in our files for future reference. We also offer a free annual reminder service, giving you a heads-up when it comes time to have your backflow assembly tested again.