Rainwater laws / Delaware
Is it legal to collect rainwater in Delaware?
Checked at Delaware's own statutes and agencies, November 2026. Not legal advice.
Allowed
Yes. We found no Delaware law limiting it, and DNREC promotes rain barrels as site-scale green infrastructure.
Before you buy a big tank
State law is only one layer. Cities and counties can set their own rules, especially for tanks plumbed into the house, and an HOA can limit where a barrel sits. Drinking rainwater needs treatment everywhere. For a barrel or two on a downspout for the garden, the state rule above is usually the one that matters.
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