12-mile tunnel proposed to divert sewage from Windermere

United Utilities, the Environment Agency, and local campaigners propose a 12-mile tunnel to carry sewage away from Windermere, England's largest lake, which has suffered from raw sewage discharges and toxic algal blooms. The plan is at an early stage, with funding and approval uncertain. This marks a significant infrastructure response to chronic pollution, but its impact depends on implementation.