i am in southern Vermont looking to drain graywater from kitchen sink, bathroom sink and tub (part time use). Wondering how deep I need to bury pipes to avoid freezing, and how deep the drains at the mulch basins need to be. Thank you!

  • Will you be using the system all year? Or only during non-freezing months?
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Will the system be used during the winter?

Generally speaking you should keep the outlets below the freeze line, but since I’m not familiar with your area I don’t know what depth that would be.

A greywater installer in Maryland (Nutricycle systems) typically buries 8 inches, though goes deeper in extreme conditions.

And make sure you slope all pipes so that there is no standing water in them!

Good luck with your system!

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