Benefit: Groundwater

About 61% of the communal water supply originates from groundwater deposits. The communal water supply has been approximately 410 million cubic metres annually in recent years. About 90% of the population is inside the distribution network and 10% is dependent on their own water sources, most commonly private wells.

There are 6 020 classified groundwater areas in Finland which produce altogether 5.4 million m³ groundwater every day. More than half of these deposits are suitable for water supply and most of them have been assessed as good in quality. About 350 deposits were considered being at risk and 98 of them had bad water quality in 2013. In recent years the water quality has weakened in about a hundred deposits.

Keinänen-Toivola, M. M., Ahonen, M. H. & Kaunisto, T. 2007. Talousveden laatu Suomessa vuosina 1984–2006. Vesi-instituutin julkaisuja 2. 112 s. [In Finnish]

Talousvesi. Vesilaitosyhdistys (VVY). [In Finnish]

Pohjavesialueet. Finnish Environment Institute. [In Finnish]

Pohjavesien määrällinen ja kemiallinen tila. Ympäristöhallinto / Environmental Administration.

Pohjavesien tila ja riskialueet 2013. ELY Centres, Finnish Environment Institute, National Land Survey of Finland.