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In England and Wales, water services are primarily provided by privatized companies, while in Scotland and Northern Ireland, these services are managed by publicly owned entities. Each region's unique approach is explored in separate articles, while this article is devoted to some common issues across the United Kingdom.
Map of the London sewerage system from 1882. The London sewer system is part of the water infrastructure serving London, England. The modern system was developed during the late 19th century, and as London has grown the system has been expanded. It is currently owned and operated by Thames Water and serves almost all of Greater London.
Parts of England were affected by severe drought in 1976, 1995 and 2005-2007. [8] [9] Household water use in England and Wales stood at about 145 litres/capita/day in 2008/09. [10] Total water supply for domestic and commercial customers in England and Wales was 14.5 million cubic metres per day in 2009. [11]
Map of Seattle sewer districts, 1894. The main part of such a system is made up of large pipes (i.e. the sewers, or "sanitary sewers") that convey the sewage from the point of production to the point of treatment or discharge. Sewers under construction in Ystad, Sweden. Types of sanitary sewer systems that all usually are gravity sewers include:
Water supply and sanitation in Georgia is characterized by achievements and challenges. Among the achievements is the improvement of water services in the capital Tbilisi where the water supply is now continuous and of good quality, major improvements in the country's third-largest city Batumi on the Black Sea where the country's first modern wastewater treatment plant now is under operation ...
The decision to build a combined sewer system or two separate systems is mainly based on the need for sewage treatment and the cost of providing treatment during heavy rain events. Many cities with combined sewer systems built their systems prior to installing sewage treatment plants, and have not subsequently replaced those sewer systems. [2]
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It was one of the world's first modern sewer systems and is still in use today, having been designed to account for the city's continued growth. The Thames Water Ring Main is a notable large-scale water supply infrastructure, comprising 80 kilometres of wide-bore water-carrying tunnels.