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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 Water metering, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water
Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent). It is vital for all known forms of life, despite not providing food energy or organic micronutrients. Its chemical formula, , indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. In liquid form, is also called "water" at standard temperature and pressure. Because Earth's environment is relatively close to water's triple point, water exists on Earth as a solid, a liquid, and a gas. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds consist of suspended droplets of water and ice, its solid state. When finely divided, crystalline ice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paranaguá
Paranaguá (Tupi language, Tupi, 'Great Round Sea') is a city in the state of Paraná (state), Paraná in Brazil. Founded in 1648, it is Paraná's oldest city. It is known for the Port of Paranaguá, which serves as both the sea link for Curitiba, to the west and the capital of Paraná, and as one of the largest ports of Brazil. As of 2020, the city has an estimated population of 156,174 and a population density of 169.92 persons per km², making it the tenth most populated city in the state of Paraná. The total area of the city is . History Early settlement Paranaguá was home to a ''sambaqui'', or midden culture, for several millennia prior to the arrival of the Portuguese. Little is known of the population, which existed along the coast of Paraná. The area was later home to the Carijó people, an extinct subgroup of the Guaraní people. Portuguese explorers captured the Carijó for slave labor. Over time, the remaining Carijó intermarried with whites and African residents ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Meter
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 Fluid dynamics, 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 foot, cubic feet (ft3) 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. Water metering is changing rapidly with the advent of smart metering technology and various innovations. In North America, standards for manufacturing water meters are set by the Ame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Supply
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. Public water supply systems are crucial to properly functioning societies. These systems are what supply drinking water to populations around the globe. Aspects of service quality include continuity of supply, water quality and water pressure. The institutional responsibility for water supply is arranged differently in different countries and regions (urban versus rural). It usually includes issues surrounding policy and regulation, service provision and standardization. The cost of supplying water consists, to a very large extent, of fixed costs (capital costs and personnel costs) and only to a small extent of variable costs that depend on the amount of water consumed (mainly energy and chemicals). Almost all service providers in the world charge tariffs to recover part of their costs. Water supply is a separat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UNEP
The United Nations Environment Programme (UNEP) is responsible for coordinating responses to environmental issues within the United Nations system. It was established by Maurice Strong, its first director, after the Declaration of the United Nations Conference on the Human Environment, United Nations Conference on the Human Environment in Stockholm in June 1972. Its mandate is to provide leadership, deliver science and develop solutions on a wide range of issues, including climate change, the management of marine and terrestrial ecosystems, and green economic development. The organization also develops international environmental agreements; publishes and promotes environmental science and helps national governments achieve environmental targets. As a member of the United Nations Development Group, UNEP aims to help the world meet the 17 Sustainable Development Goals. UNEP hosts the secretariats of several multilateral environmental agreements and research bodies, including Conven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Urban Water Conservation Council
California () is a state in the Western United States that lies on the Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares an international border with the Mexican state of Baja California to the south. With almost 40million residents across an area of , it is the largest state by population and third-largest by area. Prior to European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. European exploration in the 16th and 17th centuries led to the colonization by the Spanish Empire. The area became a part of Mexico in 1821, following its successful war for independence, but was ceded to the United States in 1848 after the Mexican–American War. The California gold rush started in 1848 and led to social and demographic changes, including depopulation of Indigenous tribes. It organized itself and was admitted as the 31st state in 1850 as a free state, foll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Supply And Sanitation In Chile
Water supply and sanitation in Chile were once considered efficient and equitable but in 2022 Chile struggled to reliably provide water throughout the country due to drought. Chile's water resources have been strained by the Chilean water crisis, which was partially caused by a continuing megadrought that began in 2010, along with an increased demand for agricultural and other commercial interests. Chile began rationing water in April 2022. Chile's water and sanitation sector distinguishes itself in a few key ways. First, all urban water companies are privately owned or operated (the only exception is SMAPA), and water was defined as a private commodity in the 1980 Constitution of Chile. Second, the Chilean government instituted a subsidy for water costs in 1990 for citizens located in impoverished regions. Third, Chile became the first Latin American Country to achieve 100% of its population using basic water sanitation in 2016. Access In 2015, 99% of the population of C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marginal Cost
In economics, the marginal cost is the change in the total cost that arises when the quantity produced is increased, i.e. the cost of producing additional quantity. In some contexts, it refers to an increment of one unit of output, and in others it refers to the rate of change of total cost as output is increased by an infinitesimal amount. As Figure 1 shows, the marginal cost is measured in dollars per unit, whereas total cost is in dollars, and the marginal cost is the slope of the total cost, the rate at which it increases with output. Marginal cost is different from average cost, which is the total cost divided by the number of units produced. At each level of production and time period being considered, marginal cost includes all costs that vary with the level of production, whereas costs that do not vary with production are fixed. For example, the marginal cost of producing an automobile will include the costs of labor and parts needed for the additional automobile but not t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johor
Johor, also spelled Johore,'' is a States and federal territories of Malaysia, state of Malaysia in the south of the Malay Peninsula. It borders with Pahang, Malacca and Negeri Sembilan to the north. Johor has maritime borders with Singapore to the south and Indonesia to the east and west. As of 2023, the state's population is 4.09 million, making it the second most populous state in Malaysia, after Selangor. Johor Bahru is the capital city and the economic centre of the state, Kota Iskandar is the state administrative centre and Muar (town), Muar serves as the royal capital. As one of the nation's most important economic powerhouses, Johor has the highest gross domestic product (GDP) in Malaysia outside of the Klang Valley, making it the country's List of Malaysian states by GDP, second largest state economy, behind Selangor. It also has the List of Malaysian states by household income, second highest household income among all states in Malaysia. Johor is a major manufacturi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tangiers
Tangier ( ; , , ) is a city in northwestern Morocco, on the coasts of the Mediterranean Sea and the Atlantic Ocean. The city is the capital of the Tanger-Tetouan-Al Hoceima region, as well as the Tangier-Assilah Prefecture of Morocco. Many civilisations and cultures have influenced the history of Tangier, starting from before the 10th centuryBCE. Starting as a strategic Phoenician town and trading centre, Tangier has been a nexus for many cultures. In 1923, it became an international zone managed by colonial powers and became a destination for many European and American diplomats, spies, bohemians, writers and businessmen. That status came to an end with Moroccan independence, in phases between 1956 and 1960. By the early 21st century, Tangier was undergoing rapid development and modernisation. Projects include tourism projects along the bay, a modern business district called Tangier City Centre, an airport terminal, and a football stadium. Tangier's economy is set to bene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rabat
Rabat (, also , ; ) is the Capital (political), capital city of Morocco and the List of cities in Morocco, country's seventh-largest city with an urban population of approximately 580,000 (2014) and a metropolitan population of over 1.2 million. It is also the capital city of the Rabat-Salé-Kénitra administrative region. Rabat is located on the Atlantic Ocean at the mouth of the river Bou Regreg, opposite Salé, the city's main commuter town. Rabat was founded in the 12th century by the Almohad Caliphate, Almohads. After a period of growth, the city fell into a long period of decline. In the 17th century, Rabat became a haven for Barbary pirates. When the French established a French protectorate in Morocco, protectorate over Morocco in 1912, Rabat became its administrative center. When Morocco achieved independence in 1955, Rabat became its capital. Rabat, Temara, and Salé form a conurbation of over 1.8 million people. Rabat is one of four Imperial cities of Morocco, and it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
