The Fire and Rescue Department of Central Uusimaa is warning residents of Klaukkala not to drink their tap water due to a bacterial infection.
Klaukkala, some 30 kilometres north of Helsinki, is part of the municipality of Nurmijärvi.
The warning was issued by the Kerava emergency centre on Thursday morning. It says that Escherichia coli (E. coli) bacteria has been found in the municipal water supply, and that water must be boiled before use. E. coli can potentially trigger cramps, diarrhoea and fever.
About a year ago, authorities detected E. coli in water near fur farms in Jakobstad, western Finland. The bacteria were also found in tap water near Oulu in mid-2013.