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The week in brief · Week 43 · 19–25 October
The week's biggest wastewater story was a price tag. A six-member coalition in north-west England concluded that it is technically possible to let only rainwater into Windermere, England's largest natural lake, and that doing so would cost £3.6–3.7 billion. Closer to home for Central Europe, murky sewage ran into the Danube in Budapest for several days before the utility stopped it, and two major treatment plant rebuilds moved forward: a long-stalled one in Chișinău and a decade-scale one in Prague.
On 21 October the Only Rainwater into Windermere coalition, which brings together the Environment Agency, the Lake District National Park Authority, the regional utility United Utilities, Westmorland and Furness Council and two local campaign groups, published a 15-month feasibility study (Only Rainwater into Windermere, 2026). Its conclusion is that wastewater inputs and highway runoff can be removed from the lake altogether.
More than 70 options were narrowed to two. Both would intercept wastewater across the catchment and carry it by tunnel out of the catchment for advanced treatment, discharging the treated effluent either to the River Leven or at Ulverston. The package includes up to 138 km of new sewerage, 35 km of highway runoff interception and 37 hectares of sustainable drainage, and would connect about 12,800 people to public sewers for the first time. The Leven option is costed at £3.6 billion and the Ulverston option at £3.7 billion, against estimated benefits of about £7.5 billion, or roughly £1.90 for every pound spent.
