Backflow preventers....comments:
1) be thankful you don't live in many northern states. Every residence with irrigation system requires a backflow preventers and it MUST be put in and removed every season by a licensed contractor... Really dumb
2) backflow preventers in general are a waste since the up-river supply is always at a higher pressure. You'd have to force water at 100psi to contaminate the water supply
3) yes, the Villages is one of the few developments I know of that has a separate irrigation supply system....good planning
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