Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes.
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Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes.
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Public water supply systems are crucial to properly functioning societies.
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The institutional responsibility for water supply is arranged differently in different countries and regions .
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Water supply is a separate topic from irrigation, the practice and systems of water supply on a larger scale, for a wider variety of purposes, primarily agriculture.
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Water supply systems get water from a variety of locations after appropriate treatment, including groundwater, surface water, and the sea through desalination.
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Water supply quality is dependant of the quality and level of pollution of the water source.
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Continuity of water supply is taken for granted in most developed countries, but is a severe problem in many developing countries, where sometimes water is only provided for a few hours every day or a few days a week.
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Water supply pressures vary in different locations of a distribution system.
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An estimated 10 percent of urban water supply is provided by private or mixed public-private companies, usually under concessions, leases or management contracts.
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International standards for water supply system are covered by International Classification of Standards 91.
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Water supply utilities are often sheltered from this pressure, and it frequently shows: some utilities are on a sustained improvement track, but many others keep falling further behind best practice.
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Besides subsidies water supply investments are financed through internally generated revenues as well as through debt.
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Metering of water supply is usually motivated by one or several of four objectives.
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Metering is considered good practice in water supply and is widespread in developed countries, except for the United Kingdom.
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In developing countries it is estimated that half of all urban water supply systems are metered and the tendency is increasing.
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London water supply infrastructure developed over many centuries from early mediaeval conduits, through major 19th-century treatment works built in response to cholera threats, to modern, large-scale reservoirs.
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