Voters in Spokane and Kootenai counties favor decisive action to improve the quality of the Spokane River, even if it means opening their wallets and putting up with some inconvenience. According to a survey conducted in July by a consortium of local government and industrial groups, and made public Wednesday, a majority favored banning phosphates from dishwasher detergents and fertilizers, switching houses from septic tanks to sewer systems, reusing treated sewage for irrigation and installing state-of-the-art treatment technology at local sewage plants.