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Rain Barrels & Water Harvesting

The arithmetic is better than most people expect: one inch of rain falling on a thousand square feet of roof yields roughly 600 gallons, which is more than a single barrel can hold ten times over.A barrel needs three things to work rather than become a problem —...

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The arithmetic is better than most people expect: one inch of rain falling on a thousand square feet of roof yields roughly 600 gallons, which is more than a single barrel can hold ten times over.

A barrel needs three things to work rather than become a problem — a screened inlet so it does not breed mosquitoes, an overflow routed away from the foundation, and a level load-bearing base, because 55 gallons of water weighs over 450 pounds.

Diverter kits let you tap a downspout without cutting it permanently, and linking kits chain barrels together. A few states still regulate rainwater collection, so it is worth a quick check of local rules before you plumb a system in.

142 products