"Rod Speed" wrote in message ...

"micky" wrote in message
...

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

But they all can be occasionally.

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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.