Water companies have been told to ‘think carefully’ about the impact of their plans for a new reservoir in the Cambridgeshire Fens. Met Office projections suggest the region can expect hotter and drier summers and wetter winters, meaning that there is a pressing need to store winter water to cope with summer droughts. The water companies say that unless bold action is taken demand will outstrip the available supply by nearly 600 million litres per day by 2050. The proposed reservoir – close to Chatteris, Doddington and Wimblington – could supply enough water for around a quarter of a million h…