Douglas County, NE Landscaping Rules: Rainwater Harvesting (2026)

Rainwater harvesting for residential use in Douglas County is fully permitted. Nebraska does not impose state-level restrictions on residential rainwater collection — unlike Colorado, which historically limited collection under prior appropriation doctrine, Nebraska's riparian-leaning water rights treat captured rainwater on a property as belonging to the property owner. Rain barrels and small cisterns (up to approximately 1,000 gallons) typically require no permits for garden irrigation, lawn watering, and non-potable household uses. The Papio-Missouri River Natural Resources District (NRD) and Douglas County Extension offer rain barrel workshops and rebate programs to promote stormwater mitigation. Larger cisterns (over 1,500 gallons) and systems with plumbing connections to the house may trigger building and plumbing permits under Omaha Muni Code Ch. 43. Potable use of collected rainwater requires treatment systems that meet Nebraska Department of Health & Human Services drinking water standards. HOA covenants may restrict visible rain barrel placement in front yards. The Keep Omaha Beautiful organization periodically distributes subsidized rain barrels.