Distilled water is water that has undergone purification from mineral substances and mechanical impurities. Distilled water has a variety of uses: 1. Medicine: It is used to prepare medicinal solutions, infusions and wash wounds. 2. Laboratories: Important in chemical and biological research where high purity water is required. 3. Automotive industry: Used for diluting concentrates of antifreeze and windshield washer fluids, production of batteries, washing of radiators. 4. Instrumentation: To fill batteries, prepare working solutions and cool equipment. 5. Household use: For irons, steam cleaners, aquariums.