Water supply services include water procurement and distribution, wastewater management, pumping and cleaning, as well as contract, invoicing and customer service matters.
Imatran Vesi operates as an accounting-differentiated balance sheet unit of the urban development and technical services area of responsibility.
Water is procured mainly from groundwater resources. The groundwater of Hiekkoinlahti and the surface water of Lake Immala are treated at the Immala water plant. After the commissioning of the Imatra-Joutseno connecting water pipeline and the related Myllypuro groundwater abstraction, the share of surface water in Immalanjärvi has been approx. 5% of the produced water volume.
The construction of the current water and sewer network of Imatra Vede started in 1949. The water supply network consists of a 325 km long water main network and a 370 km long sewer network (waste and rainwater).
In addition to Imatra's water distribution area, Imatra Vesi sells approx. 8000m3 of water to the Jääske water cooperative and approx. 4000m3 to the water supply cooperative of the Ahola region.
For exceptional situations, connecting water pipes were built from Imatra Vede's water supply network to Ruokolahti's downtown area in 2005 and through Ruokolahti's Oritlammi to Rautjärvi Asemanseudu in 2003.
Wastewater is treated at the Meltola wastewater treatment plant, which was completed in 1981, where, in addition to Imatra's own wastewater, wastewater from the Rauha–Tiuru and Korvenkylä areas from the Ruokolahti, Rautjärvi Aseman region, and Lappeenranta side is piped. According to the plans, Meltola's wastewater treatment plant will be renovated in 2020–2021.