The Water Supply Museum is a museum in Thessaloniki, Central Macedonia, Greece. It is located in the Sfageion area near the city's western entry point. The museum began operating in February 2001. It is housed in the historical building known as the Old Pump House belonging to the (EYATh). This building was constructed between 1890 and 1892 by a Belgian company, as part of the campaign to modernize Thessaloniki, along with other construction projects like the railways and the gasworks, and later on the electricity company and the tram network. * Diesel engine * Steam tank