Rebates for Rain Gardens and Cisterns Español | 中文 | Tiếng Việt RainWise cisterns and rain gardens protect Seattle’s waterways by keeping stormwater out of the sewer system. When too much stormwater enters the sewer, polluted water can overflow into Puget Sound, the Duwamish River, and other lakes and bays. RainWise is a partnership program of King County Wastewater Treatment Division (WTD) and Seattle Public Utilities (SPU). RainWise rebates cover up to 100% of the cost of building rain gardens and cisterns on eligible properties in Seattle. It’s an affordable way to add attractive landscaping to your yard, collect water, and protect the environment. Check Your Eligibility Am I eligible? Check to see whether your property is eligible for a RainWise rebate for a cistern, a rain garden or both. Check Eligibility Rebates Rebates cover most or all of the cost of a RainWise project. Talk with a contractor about how to maximize your rebate. Rebates RainWise Events Learn about the program and connect with neighbors, contractors, and experts both in person and online. Attend Event RainWise & You Learn about how you can become part of making Seattle’s waterways cleaner through RainWise! Cisterns A cistern is a large above-ground tank, like a giant rain barrel, used to collect roof water. RainWise cisterns slowly release collected water back into the storm sewer to help reduce combined sewer overflows. Learn more about Cisterns Rain Gardens A rain garden is a shallow depression containing spongy soil and a variety of plants. Rain gardens collect water from your roof downspout and allow it to safely soak into the ground. Learn more about Rain Gardens RainWise Merica, RainWise Homeowner Merica loves her RainWise rain garden design because it follows the original flow of the landscape. View case study RainWise George and Elizabeth, RainWise Homeowner George and Elizabeth installed six rain gardens and two cisterns with 3,686 square feet of roof runoff captured. View case study RainWise Maria D, RainWise Homeowner Maria loves her RainWise rain garden and the variety of plants it provides. View case study RainWise Paul, RainWise Homeowner Paul captures water from the house and garage roofs to flow into a RainWise rain garden. View case study RainWise Maria M, RainWise Homeowner Maria's RainWise rain garden is both beautiful and functional. View case study Homeowner Stories Over 2,600 Seattle property owners have gotten RainWise. Together, those installations manage the rain that falls on the equivalent of 58 football fields, keeping over 37 million gallons out of the sewer system every year. Head over to our homeowner stories to see examples of some of these projects. View RainWise Homeowner Stories Big Roofs: Beyond Residential We encourage community centers, religious organizations, apartment buildings, businesses and other large buildings to participate in the RainWise program. The bigger the roof, the bigger the rebate to keep Puget Sound and its surrounding waterways clean. Learn more about Big Roofs Maintenance On-going maintenance is essential to keep your RainWise installation working properly. We are counting on your RainWise project to prevent polluted stormwater from going into our waterways. RainWise requires homeowners to maintain their RainWise project for five years. Learn more about Maintenance
