Backflow prevention helps prevent contamination if the municipal water supply flows in the wrong direction. We’re all accustomed to expecting fresh water to flow in one direction only: into the home. However, certain events can actually reverse that flow. These include a system water main break, fire hydrants suddenly opened, or another occurrence that causes the municipal water pressure to plunge rapidly. This effect may reverse proper normal water flow, pulling water from various undesirable sources back into the system. Polluted or otherwise unsanitary water may therefore potentially contaminate the home water supply.
Safeguarding Your Water
A single device to prevent backflow installed at the water meter is often required by municipal codes. However, this may not adequately protect your individual home if the house includes cross-connections where tainted water can be siphoned backward into household water-supply pipes. Common home cross-connections that could potentially threaten your fresh water include: home sprinkler systems, swimming pools, boilers, fire sprinklers, outdoor fountains, or even something as simple as a handheld shower spray or a garden hose that might be immersed in tainted water.
Home backflow-prevention devices are essentially one-way valves that do not allow water to flow backward and enter the home supply lines. In typical residential applications, these devices may be installed at:
Each outdoor hose bib or connection
Lawn-sprinkler supply pipe
Fire sprinkler supply pipe
Heating system boiler
Individual devices such as handheld shower sprayers
Getting The Job Done
An inspection by a qualified professional plumber is required to identify any parts of your plumbing system that may require backflow prevention. Devices are available in several different types, which are designed to adapt to a particular installation or requirement. Because events that trigger backflow generally occur without notice and may happen at any time, backflow devices function automatically.
For more about the benefits of home backflow prevention devices, contact the plumbing pros at Air Assurance.