Loss and waste Commercial and industrial Public use Domestic 1. This water is supplied to houses, schools, hospitals, hotels, restaurants, etc. for culinary, sanitary, and other purposes. Use varies with the economic level of the consumer, the range being 20 to 100 gal/capita/d. It should be pointed out that these figures include water used for watering gardens and lawns and for washing cars. 2. This water is supplied to stores, offices, and factories. Generally the quantity of water demanded directly related to the number of persons employed, to the actual floor space or area of each establishment, and to the number of units manufactured or produce. In the United States use averages 150 Bgal/d. 3. This water is the water furnished to public buildings and used for public services. This includes water for schools, public buildings, fire protection, and flushing streets. 4. This is water that is unaccounted for. It can be attributed to leaks in the distribution system, inaccurate meter readings, and unauthorized connections