Backflow preventers are mechanical devices that are key to keeping our drinking water safe. Manufactured in various sizes and configurations, These devices are found are in many buildings in North America.
In most municipalities, bylaws are in place to regulate the installations and frequency of testing for these devices.
Many municipalities have implemented programs to assess the need for the installation and maintenance of these devices. Many of the devices used today require testing upon installation. Annual inspections and certification is often required within buildings that are considered to be high risk.
In many circumstances, potable water piping is directly connected to non-potable piping systems i.e. fire systems, heating systems, chemical piping systems etc. Back flow prevention devices are designed to create a safe barrier between these systems.