Wichita, KS Landscaping Rules: Rainwater Harvesting (2026)

Kansas water law treats captured rainwater as exempt from the appropriation system when used on the same property where it falls, so Wichita residents may legally collect rain from rooftops without applying for a water right. The city has no specific ordinance restricting rain barrels, and the Wichita Water Utilities actively encourages harvesting through periodic rebate programs and educational workshops at Sedgwick County Extension. Above-ground systems under 2,500 gallons used solely for landscape irrigation do not require a permit. Cisterns over 2,500 gallons, any in-ground tank, or systems plumbed into a structure trigger a Building Department permit because they involve structural and plumbing review. If harvested water is connected to indoor plumbing for any non-potable use such as toilet flushing, the system must include a reduced pressure backflow assembly tested annually to protect the municipal supply. Potable use is permitted but requires a full treatment train and approval from the Sedgwick County Health Department. Tanks must be screened to exclude mosquitoes per public health code. HOA covenants in some Wichita subdivisions restrict visible barrels, so check private deed restrictions before installation.