We recommend contacting a licensed plumber. You can install it yourself, but it must be installed according to our specifications, and the Utilities Department will inspect it after installation. If you hire someone to install it, provide them with a copy of the letter. After completing the install, contact a Backflow Tester from our List of Approved Backflow Testers and schedule a test. Provide a copy of the letter to your Tester. After completing the test, the Tester will submit the results to the City of Alamogordo Utilities Department.