Welcome to Graham Backflow Testing & Certification, Inc., your trusted experts in backflow prevention services. With over 45 years of experience, our team is dedicated to ensuring the safety and reliability of your water supply.
Specializing in the testing, certification, repair, and replacement of backflow preventers, we handle all sizes and types—both testable and non-testable—across domestic, commercial, and residential systems. We proudly serve York and Lancaster Counties, delivering exceptional service with a commitment to quality and efficiency.
Our reputation speaks for itself. We are well-known in the community and trusted by some of the largest manufacturing plants and businesses in the area. As certified backflow prevention device inspectors/testers, we bring unparalleled expertise and professionalism to every job, ensuring that your water systems operate smoothly and securely.
At Graham Backflow Testing & Certification, Inc., we are dedicated to protecting your water supply and providing peace of mind. Contact us today to learn more about our services and how we can assist you. backflow testing and certification certified backflow tester
