Forgot to say that my piping choices are for non-buried use. For underground, I wouldn't use PVC/CPVC-it cracks with ground settling as it gets brittle. Use copper, PE, PEX, etc. If you can just unroll a stiff coil in one direction inside a trench, then PEX might make sense. It's just too hard to manipulate in the larger sizes for anything else.
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"I‘d put my money on the sun and solar energy. What a source of power! I hope we don‘t have to
wait until oil and coal run out before we tackle that." Thomas Edison, 1847 — 1931
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