Rainwater laws / Kansas

Is it legal to collect rainwater in Kansas?

Checked at Kansas's own statutes and agencies, November 2026. Not legal advice.

No state law found

We found no Kansas law about rooftop rain collection.

What we checked

We searched ksrevisor.gov and kslegislature.gov (the Kansas Department of Agriculture water site refused our requests) for anything on collecting rain from a roof and found nothing. That means no state rule we could find limits a rain barrel, not that none exists.

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.

See how many gallons your roof collects.

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