The water shrew has a large range extending from the British Islands eastwards to Lake Baikal, Yenisei River (Russia), Tien Shan (China), and northwest Mongolia. In the Mediterranean is ranges from northern Spain eastwards to Bulgaria.In Europe it is generally widespread throughout, with the exception of southern Iberia. It occurs only sporadically on the Balkan peninsula, where it is largely restricted to the mountains. It occurs from sea level to over 2,500 m (Stone 1995). The distribution of the species recently expanded southwards in Italy owing to a new record in the Sila massif (Aloise et al. 2005).