Ennerdale Water is the most westerly lake in the Lake District National Park in Cumbria, England. It is a glacial lake, with a maximum depth of 150 feet (45 metres), and is ½ mile to a mile (700 to 1,500 metres) wide and 2½ miles (3.9 kilometres) long. The lake lies in the eponymous valley of Ennerdale, surrounded by some of the highest and best-known fells in Cumbria including: Great Gable (899 m), Green Gable, Brandreth, High Crag, Steeple and Pillar. To the west of the lake lies the hamlet of Ennerdale Bridge, consisting of two pubs and a few houses. It is close to the port of Whitehaven. Etymology " 'Anund's valley'. The name Ennerdale seems originally to have derived from 'Anundar', genitive sing.[ular] of the ON personal name 'Anundr'/'Qnundr', and ON 'dalr' 'valley', but there has been cross-influence between this p.n. and 'Ehen', the name of the river which flows through the valley." (ON is Old Norse.) The lake has been referred to in guidebooks and maps variously as "Brodewater" (1576), "Brodwater" (1695), "Broad Water" (1760), "Ennerdale Water" (1784) and "Ennerdale Lake" in Otley's Guide (1823). It is now the Ordnance Survey convention to name it "Ennerdale Water". Geography Ennerdale Water is fed by the River Liza and other streams, and in turn feeds the River Ehen, which runs to the Irish Sea. Water abstraction Although the lake is natural, in 1902 a shallow weir was added to what is probably a glacial moraine to maintain the level. The lake is owned by United Utilities, which abstracts water to serve customers in the Whitehaven area. In 2013, United Utilities was informed by the Environment Agency that the abstraction licence was being revoked to protect the environment of Ennerdale and the River Ehen. This meant that United Utilities had to find an alternative water source for customers in West Cumbria. After public consultation, a preferred option to provide water to West Cumbria via a new pipeline from Thirlmere was selected. After a public inquiry in 2014, the independent Planning Inspectors report ruled that the Thirlmere transfer was the right solution and that abstraction from Ennerdale Water would cease by 2022. The construction of the pipeline commenced in 2017. At the same time, United Utilities started to blend water from Ennerdale Water with groundwater from boreholes near Egremont. Environmental protection measures Ennerdale has been designated a biological Site of Special