If a hose is submerged a backyard pond or attached to a sprayer with pesticide or fertilizer, the contaminated water could be sucked into the home’s drinking water piping. Make sure to loosen the old vacuum breaker using your hands only, or else you could damage your pipes or strip the threads on your hose bibb This video shows you how to fix a leaky hosebib and how to repair an outside faucet leak
Hose Bib Leaking From Vacuum Breaker at Loren Griffith blog
The arrowhead vacuum breaker is a diy fix that you can do yourself.
The vacuum breaker should not leak when the valve is open and delivering water through the hose
When you turn off the valve the pressure on the supply side of the vacuum breaker may drop below the pressure on the outlet side. When hose connection vacuum breakers start to spray water, it's a sign they need replacing Learn how to fix a leaky hose bib here. If your hose bibb is leaking from the vacuum breaker, you can easily replace it with a new cash acme vacuum breaker
