Be RainWise
What's the Problem?
With every storm, rain carries pollutants off our roofs, driveways and other hard surfaces to local creeks, Lake Washington and the Puget Sound. During big storms, the sheer volume of this “stormwater” can cause sewer overflows, and erode hillsides and stream banks. Rain gardens and cisterns can help control this stormwater with your help.
How to become RainWise
The RainWise program provides rebates that cover most or all of the cost of installing cisterns and rain gardens on your property. To receive a rebate, you must live in an eligible combined sewer overflow basin. The average rebate has been around $4,400.
You can also call the Garden Hotline at 206-633-0224 for eligibility information.
Visit the 700 Million Gallons website for more information or go on a RainWise virtual garden tour !
Learn more
Download the following documents to learn more about this program.
Be RainWise flyer 
Not eligible for RainWise?
Green Stormwater Mini-Grants are available in the King County Wastewater Treatment Division service area.
Here are some other resources: GSI Western WA Resources
Rainwise News
Celebrate first RainWise stormwater system for a restaurant, Oct. 4 in White Center, September 21, 2018
The RainWise Program celebrates a pollution prevention milestone, June 21, 2018
Celebrate a new RainWise installation at Samaritan Center of Puget Sound, April 10, March 28, 2018
Celebrate a new RainWise installation at Prospect United Church of Christ, March 25, March 6, 2018
Blog: Clean water stories
Why “Water Wisely” When It Won’t Stop Raining? February 26, 2017
Making Your Landscape a Dream, Not a Nightmare, January 21, 2017
Join the Crowd: RainWise Celebrates 1,000 Stewards! October 11, 2016
Peace Lutheran Church goes RainWise, March 4, 2016
Seattle Mosque gets RainWise, November 20, 2015
Faon O'Connor
CSO Control Program
206-477-4499