On 3/5/2021 5:58 PM, Jim Wilkins wrote:
"Rod Speed"Â* wrote in message ...

"micky" wrote in message
...

What is this backflow stuff?Â* If you're
water supply is never interrupted,

But they all can be occasionally.

--------------------------

Personally I've seen and rearranged a garden hose submerged in a
swimming pool to refill it in the spring, to raise the level high enough
to filter out the leaf debris, dead bugs, bird crap and green algae. The
owner had covered the pool but a seam ripped.


The companies that make backflow preventers has some good lobbyists. At
work we had to have them on all pressure vessels, like boilers. Our
boilers had much higher pressure than the town water system.

At home we have to have them on the lawn sprinklers. I pay $25 a year
for someone to come out and inspect it. Never saw the guy but there is
a new tag on it and a bill in the mail.

I'd like to see good some statistics on how much good they do. This
gives a number but does not say if it is one year or a hundred years.

https://www.plumbtimesc.com/the-impo...-home-or-work/

A report by the CDC confirmed that more than 1006 people across 19
states in the US had some form of sickness related to water
contamination. Contaminated water can spread diseases in a split second
due to the interconnection of water systems. Backflows tend to redirect
contaminated water in homes.