Your clothes washer is the second biggest water user inside your home, behind only toilets. On average, 22 percent of our indoor water goes to cleaning clothes. The average top-loading washer uses 30 to 40 gallons per load. High-efficiency washers cut that by 35 percent or more, saving an estimated 15 gallons per load. Considering the average family does 300 loads a year, a high-efficiency washer could save 4,500 gallons. Save more than water with rebate programs, available from several local water providers including the City of Sacramento.