Alwen Reservoir

The reservoir and dam were constructed between 1911 and 1920 by Alexander Binnie, Son and Deacon (Resident Engineer John M. Parkin Assoc M.Inst. C.E.) for the Corporation of Birkenhead to provide a high quality source of drinking water for the Wirral and parts of Liverpool. The reservoir and dam were built with the authority of an act of Parliament and although the scheme involved flooding a long valley in central North Wales, the scheme encountered no opposition from local people. An original filter works building enclosing sixteen batteries of six Bell's Patent Filters is now vacant with a modern treatment plant some 100 metres distant. The treatment plant and piped aqueduct continue to…