Water table

Groundwater is created when rainwater and snowmelt runoff through the topsoil and are stored in the soil and bedrock. The soil types in the ridge area of ​​the reef are gravel, sand and sand, which pass water easily. The area is an important groundwater formation area and the Herajoki water intake receives its raw water from the Riutta area.

Groundwater is a valuable natural resource. Human activities, such as the extraction of soil materials, the use and storage of chemicals, agriculture and traffic can in some places reduce the quality of groundwater. The protection and sustainable use of groundwater is important so that natural groundwater deposits are preserved and we can continue to enjoy clean and high-quality water.