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Water Theft
Water theft is illegal tapping of water supply systems. Together with losses from water leaks in the piping, water theft is one of the major factors contributing to non-revenue water. Thames Water estimated losses by theft to amount to 2 to per year in 2017, flowing through 734 unauthorized connections. The basic controversy, however, of whether there can be such a thing as water theft (by individuals and for personal use, that is), is open. Roman period Water theft is not a new phenomenon. In Ancient Rome extensive networks of aqueducts provided a public supply of water to Roman cities. There was extensive theft from this system, often perpetrated by corrupt watermen responsible for installing and maintaining supplies. Corrupt practices included stamping an incorrect size on a supply pipe so that the customer was charged for a smaller pipe than the one they actually obtained, secretly providing an unapproved supply (usually underground where it could not be seen) by punctu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Supply System
A water supply network or water supply system is a system of engineered hydrologic and hydraulic components that provide water supply. A water supply system typically includes the following: # A drainage basin (see water purification – sources of drinking water) # A raw water collection point (above or below ground) where the water accumulates, such as a lake, a river, or groundwater from an underground aquifer. Raw water may be transferred using uncovered ground-level aqueducts, covered tunnels, or underground water pipes to water purification facilities. # Water purification facilities. Treated water is transferred using water pipes (usually underground). # Water storage facilities such as reservoirs, water tanks, or water towers. Smaller water systems may store the water in cisterns or pressure vessels. Tall buildings may also need to store water locally in pressure vessels in order for the water to reach the upper floors. # Additional water pressurizing components such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Leak
A leak is a way (usually an opening) for fluid to escape a container or fluid-containing system, such as a tank or a ship's hull, through which the contents of the container can escape or outside matter can enter the container. Leaks are usually unintended and therefore undesired. The word ''leak'' usually refers to a gradual loss; a sudden loss is usually called a ''spill''. The matter leaking in or out can be gas, liquid, a highly viscous paste, or even a solid such as a powdered or granular solid or other solid particles. Sometimes the word "''leak''" is used in a figurative sense. For example, in a news leak secret information becomes public. According to ASTM D7053-17, water leakage is the passage of (liquid) water through a material or system designed to prevent passage of water. Types and possible causes Types of leak openings include a puncture, gash, rust or other corrosion hole, very tiny ''pinhole leak'' (possibly in imperfect welds), crack or microcrack, or i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-revenue Water
Non revenue water (NRW) is water that has been produced and is "lost" before it reaches the customer. Losses can be real losses (through leaks, sometimes also referred to as physical losses) or apparent losses (for example through theft or metering inaccuracies). High levels of NRW are detrimental to the financial viability of water utilities, as well to the quality of water itself. NRW is typically measured as the volume of water "lost" as a share of net water produced. However, it is sometimes also expressed as the volume of water "lost" per km of water distribution network per day. Components and audits The International Water Association (IWA) has developed a detailed methodology to assess the various components of NRW. Accordingly, NRW has the following components: * Unbilled authorized consumption * Apparent losses (water theft and metering inaccuracies) * Real losses (from transmission mains, storage facilities, distribution mains or service connections) In many utilities ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thames Water
Thames Water Utilities Ltd, known as Thames Water, is a large private utility company responsible for the public water supply and waste water treatment in most of Greater London, Luton, the Thames Valley, Surrey, Gloucestershire, north Wiltshire, far west Kent, and some other parts of England; it has a considerable local monopoly. Thames Water is the UK's largest water and wastewater services company, and supplies of drinking water per day, and treats of wastewater per day. The area covered by Thames Water has a population of 15 million, that comprise 27% of the UK population. Thames Water is responsible for a range of water management infrastructure projects including the Thames Water Ring Main around London; the Lee Tunnel; Europe's largest wastewater treatment works and the UK's first large-scale desalination plant, both at Beckton. Thames Water awarded Bazalgette Tunnel Ltd the contract to build the £4.2 billion London Tideway Tunnel Infrastructure proposals by Thames ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orders Of Magnitude (volume)
The table lists various objects and units by the order of magnitude of their volume. Sub-microscopic Microscopic Human measures Terrestrial Astronomical References {{DEFAULTSORT:Orders Of Magnitude (Volume) Volume Volume is a measure of occupied three-dimensional space. It is often quantified numerically using SI derived units (such as the cubic metre and litre) or by various imperial or US customary units (such as the gallon, quart, cubic inch). The de ... * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Rome
In modern historiography, ancient Rome refers to Roman civilisation from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD. It encompasses the Roman Kingdom (753–509 BC), Roman Republic (509–27 BC) and Roman Empire (27 BC–476 AD) until the fall of the western empire. Ancient Rome began as an Italic settlement, traditionally dated to 753 BC, beside the River Tiber in the Italian Peninsula. The settlement grew into the city and polity of Rome, and came to control its neighbours through a combination of treaties and military strength. It eventually dominated the Italian Peninsula, assimilated the Greek culture of southern Italy ( Magna Grecia) and the Etruscan culture and acquired an Empire that took in much of Europe and the lands and peoples surrounding the Mediterranean Sea. It was among the largest empires in the ancient world, with an estimated 50 to 90 million inhabitants, roughly 20% of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Aqueduct
The Romans constructed aqueducts throughout their Republic and later Empire, to bring water from outside sources into cities and towns. Aqueduct water supplied public baths, latrines, fountains, and private households; it also supported mining operations, milling, farms, and gardens. Aqueducts moved water through gravity alone, along a slight overall downward gradient within conduits of stone, brick, concrete or lead; the steeper the gradient, the faster the flow. Most conduits were buried beneath the ground and followed the contours of the terrain; obstructing peaks were circumvented or, less often, tunneled through. Where valleys or lowlands intervened, the conduit was carried on bridgework, or its contents fed into high-pressure lead, ceramic, or stone pipes and siphoned across. Most aqueduct systems included sedimentation tanks, which helped to reduce any water-borne debris. Sluices, ''castella aquae'' (distribution tanks) and stopcocks regulated the supply to individual de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perk Of The Job
Employee benefits and (especially in British English) benefits in kind (also called fringe benefits, perquisites, or perks) include various types of non-wage compensation provided to employees in addition to their normal wages or salaries. Instances where an employee exchanges (cash) wages for some other form of benefit is generally referred to as a "salary packaging" or "salary exchange" arrangement. In most countries, most kinds of employee benefits are taxable to at least some degree. Examples of these benefits include: housing (employer-provided or employer-paid) furnished or not, with or without free utilities; group insurance (health, dental, life etc.); disability income protection; retirement benefits; daycare; tuition reimbursement; sick leave; vacation (paid and unpaid); social security; profit sharing; employer student loan contributions; conveyancing; long service leave; domestic help (servants); and other specialized benefits. The purpose of employee benefits is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leak
A leak is a way (usually an opening) for fluid to escape a container or fluid-containing system, such as a tank or a ship's hull, through which the contents of the container can escape or outside matter can enter the container. Leaks are usually unintended and therefore undesired. The word ''leak'' usually refers to a gradual loss; a sudden loss is usually called a ''spill''. The matter leaking in or out can be gas, liquid, a highly viscous paste, or even a solid such as a powdered or granular solid or other solid particles. Sometimes the word "''leak''" is used in a figurative sense. For example, in a news leak secret information becomes public. According to ASTM D7053-17, water leakage is the passage of (liquid) water through a material or system designed to prevent passage of water. Types and possible causes Types of leak openings include a puncture, gash, rust or other corrosion hole, very tiny ''pinhole leak'' (possibly in imperfect welds), crack or microcrack, or i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Right To Water
The human right to water and sanitation (HRWS) is a principle stating that clean drinking water and sanitation are a universal human right because of their high importance in sustaining every person's life. It was recognized as a human right by the United Nations General Assembly on 28 July 2010. The HRWS has been recognized in international law through human rights treaties, declarations and other standards. Some commentators have based an argument for the existence of a universal human right to water on grounds independent of the 2010 General Assembly resolution, such as Article 11.1 of the International Covenant on Economic, Social and Cultural Rights (ICESCR); among those commentators, those who accept the existence of international ''ius cogens'' and consider it to include the Covenant's provisions hold that such a right is a universally binding principle of international law. Other treaties that explicitly recognize the HRWS include the 1979 Convention on the Elimination ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Scarcity
Water scarcity (closely related to water stress or water crisis) is the lack of fresh water Water resources, resources to meet the standard water demand. There are two types of water scarcity: physical or economic water scarcity. Physical water scarcity is where there is not enough water to meet all demands, including that needed for ecosystems to function effectively. Desert climate, Arid areas for example Central and West Asia, and North Africa often suffer from physical water scarcity. On the other hand, economic water scarcity is caused by a lack of investment in infrastructure or technology to draw water from rivers, aquifers, or other water sources, or insufficient human capacity to satisfy the demand for water. Much of Sub-Saharan Africa has economic water scarcity. The essence of global water scarcity is the geographic and temporal mismatch between fresh water demand and availability. At the global level and on an annual basis, enough freshwater is available to meet such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Metering
Water metering is the practice of measuring water use. Water meters measure the volume of water used by residential and commercial building units that are supplied with water by a public water supply system. They are also used to determine flow through a particular portion of the system. In most of the world water meters are calibrated in cubic metres (m3) or litres, but in the United States and some other countries water meters are calibrated in cubic feet (ft.3) or US gallons on a mechanical or electronic register. Modern meters typically can display rate-of-flow in addition to total volume. Several types of water meters are in common use, and may be characterized by the flow measurement method, the type of end-user, the required flow rates, and accuracy requirements. In North America, standards for manufacturing water meters are set by the American Water Works Association. Outside of North America, most countries use ISO standards. Types of metering devices There are two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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