Laundry: when washing a small amount of clothes with a washing machine, the water level should not be too high; 2. Bathing: Don't leave the water in the shower head on all the time, get soaked as much as possible, wipe it all over with soap and finally rinse it off; 3, toilet water saving: If the toilet water tank is too large, you can put a brick or a coca-cola bottle filled with water in the water tank to reduce the amount of flushing each time; 4, one water is multi-purpose. After washing your face, you can wash your feet, fish water can be used to water flowers, rice water and noodle water can be used to wash dishes and chopsticks; 5. Collecting wastewater: prepare a vat for collecting wastewater at home, and collect household wastewater after washing clothes and vegetables to flush the toilet; 6. Washing tableware: It is best to wipe off the oil on the tableware with paper first, then wash it with hot water, and finally rinse it with warm water or cold water; 7. air conditioning dripping: when using air conditioning, dripping water at night can be connected to a bucket, which can completely turn waste into treasure; 8. Living habits: Turn off the faucet in time when brushing your teeth, taking hand sanitizer and putting on soap; Don't flush cigarette butts and broken garbage with the toilet; Wash potatoes, radishes, etc. Should be peeled before cleaning; When using water, if you need to open the door to answer the phone, you should turn off the faucet in time.