United Utilities, Environment Agency and local campaigners say 12-mile tunnel could take sewage away from England’s largest lake

Plans are under way for a new giant tunnel to transport sewage away from Windermere, England’s largest lake.

Windermere, in the Lake District, has suffered from widespread raw sewage and bacterial pollution driven by discharges from United Utilities. Campaigners say this pollution has caused more frequent toxic blue-green algal blooms, with the public advised to avoid swimming in the lake.