No back-flow device present on hose bib.
All homes come with many different types of back-flow devices to prevent cross contamination of drink water and non potable (dirty water). They are present through out the house at varies area. The ones I'm going to talk about are the easiest one to find, on the exterior hose bibs.
Back-flow (anti-siphoned) prevention protects the potable water system from minor, moderate, and severe hazards. There are over 10,000 reported cases of back-flow contamination each year. Some cases can be fatal. Back flow devices are required by law where needed and must be installed in accordance with plumbing or building codes. I think the most common is upset and/or crapping stomach pain, and you thought it was the old ladies or moms cooking. You'll may be surprise, that it the water you may be drinking.
Back-flow device present on hose bib.
A back-flow prevention device is used to protect water supplies from contamination or pollution.
The simplest, and most effective way to provide back-flow prevention is to provide an air gap. An air gap is simply a space between any device that opens to a plumbing system (like a valve or faucet) and any place where water can collect or pool.
One of the most common place always missing back-flows is at the exterior hose bibs and laundry tub located in garages.
~ Life is Good
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