Preservation of waterways has been a focal point for the forest industry since the 1960's. Although timber is no longer transported by floating it down the river, a good water supply is still key to a board mill.
Anjalankoski Mill which is a mill integrate including Ingerois Mill and Anjala Mill use approximately 27,000 m3/day of water from the Kymi River. All process waters are purified at the Mills’ own biological effluent treatment plant in three steps.
The clean water of the Kymi River has also made it a hot spot for anglers and for other recreational purposes. The open waterways are 17 kilometres long and fish common to the area include pike, bream, roach and perch. Some Atlantic salmon also swim up the Kymi River during high water periods, and plans for a salmon gate at Korkeakoski power plant are proceeding.