The article presents analysis structure consumption water by residents water- system in commune Drwinia situated in maĆopolska province. Commune Drwinia has area 108,8 km2 and there are 13 villages. Currently on the terrain lives about 6300 residents. The water-system serve with The Company Watersystem and Sewer-system in Bochnia. After building and giving water-system to use part of residents stilling from individual source delivery in water and don’t connect to water-system. Generally from water-system using about 77% households. In individual of villages amount connects to varies with from 53% to 93%. Few persons using water from water-system and out of habit people to conserve water causes much of discrepancy between projects using water and real using water. In projects accepted using water per one person 140 liter per day, however in last there years consumption was on the commune about 33 liter per day for one person. This is smaller from projects about 77%. Water-system (diameter pipelines and water speed) was designed and made for bigger flows water them is currently. In results water is more time them can, what maybe cause again contamination. This situation occur often in summer time when using water is less from project. One of manner ...