Before starting the replacement process at a residence, a member of the installation team will give a courtesy knock on the front door. If a customer answers the door, the team member will explain the process and ask that the customer not use any water for approximately 30 minutes during the installation. If there is no response, and before beginning the installation the team will attempt to determine that water is not currently being used. If it is determined that water is currently in use, the team will proceed with work on another customer meter and return to re-attempt the installation.