At hotels and hospitals, for example, washing sheets and towels accounts for a major percentage of the facility's overall water use. To reduce the water bill, facility executives can revamp the laundry process. Instead of washing guests' sheets every day, hotel services should give guests staying more than one night the option to have the bed simply made, and to use the same towels throughout their stay. That will reduce the amount of laundry washed and result in less water being used. Facility executives also can change the laundry processes in the laundry room.
Manufacturers can upgrade washing machines so the wash cycle itself consumes less water.
Instead of using fresh water for both the rinse and wash cycle, one retrofit option collects rinse water, filters it, and uses it for the wash cycle. Another laundry retrofit uses ozone to clean the water. The system pulls water out of the washing machine and injects it with ozone. The ozone itself breaks into water and air, causing no environmental harm. The system uses less water, and because ozone works best in cool water, less energy is needed to heat the water.