Rainwater Harvesting
Plain-English, source-cited guides to catching, storing, and (carefully) using rain from your roof.
Guides
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The best rain barrels and diverters (2026)
Barrels, diverter kits, first-flush diverters, downspout filters, and IBC totes — what to buy by setup size, with a comparison table.
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How much rain can I collect? The catchment math
The 0.62 gallons-per-square-foot-per-inch formula, a worked example, and a reference table by roof size.
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Is rainwater safe to drink?
Garden use vs. potable, the contaminants involved, first-flush and filtration, and why local rules and testing matter.