Conservation by nonresidential water users--industry, business, and government facilities--is a key component of water resources planning in Phoenix. A major study has been made to understand how industries and businesses use water and to encourage these users to conserve where it is cost-effective. The study identified 13 types of water use amenable to conservation and suggested best available conservation technologies for plumbing, cooling towers, evaporative coolers, once- through cooling, process rinsing, autoclaves, vehicle washing, commercial laundries, kitchens, and landscape irrigation. Estimated savings are given. The city created a comprehensive plan for encouraging water conservation, including research and education, recognition, financial incentives, and ordinances. An advisory committee comprising nonresidential users was formed and seven key user groups were identified. In the area of research and education, water conservation guides were developed for each key user group; the guides include water conservation ideas and a discussion of each significant water use by facilities in the user group. Other research/education efforts include seminars, visits to large users, developing a conservation plan for large users, employee education, trade show exhibits, media releases, and mailings. Recognition programs include awards, mayor's luncheon, and media releases. Financial incentives include rebates, project-specific incentives, and loan assistance. Ordinances primarily address cooling towers. In-city programs, in which the city government sets an example for water conservation, include employee education, plumbing retrofit, and landscape audits.