The article offers a brief description of the history of the drinking water supply of the village and, later, of the city of Chișinău, from the 15th century, when the first document attesting the toponym of Chisinau, especially from the 18th century, was emitted, and then the first documents directly dedicated to the mentioned topic appeared till the middle of the 20th century. It proposes a detailed description of the overground and underground structures of the former Chisinau’s Water Plant. Water Plant was erected in 1892 near the Fountains Square, on the right bank of the Bac river. After the construction of the Chisinau’s new water supply system from the Dniester River (in the 50-70s of the 20th century), the old water plant was gradually removed from operation. Nowadays, the territory and the buildings of the former water plant are administrated by the Chisinau Municipal Enterprise „The Association of Green Spaces Management”. The underground structures of the former plant have been abandoned. To preserve this wonderful complex of buildings, which is indisputably important for the history and identity of the city, it must be taken under state protection and inscribed in the National Registry of Monuments.