2,617 articles
Warragamba Dam
Warragamba Dam is a water supply dam on the Warragamba River in New South Wales, Australia, completed in 1960 and supplying about 80% of Greater Sydney's drinking water.
Warren truss
The Warren truss is a bridge truss with parallel chords connected by zigzag diagonals forming triangles, patented in 1848 by British engineers James Warren and Willoughby Monzoni.
Washington Accord (credentials)
The Washington Accord is a 1989 international agreement among engineering accreditation bodies, whose signatories recognize each other's accredited engineering degree programs as substantially equivalent in their own jurisdictions.
Washington Aqueduct
The Washington Aqueduct is a federally owned water supply agency that delivers Potomac River drinking water to about one million people in the Washington, D.C. region.
Washington Award
The Washington Award is an annual American engineering honor, established in 1916 by the Western Society of Engineers and first presented to Herbert Hoover in 1919.
Waste
Waste is material a household, business, or institution discards, from everyday garbage to hazardous, radioactive, medical, and industrial residues, which most countries regulate and increasingly recycle.
Waste stabilization pond
Waste stabilization pond (oxidation pond, lagoon): natural wastewater treatment basin using bacteria, algae, sunlight, and sedimentation. Types include anaerobic, facultative, aerated, maturation ponds; low-cost, land-intensive, widely used for pathogen removal and reuse.
Wastewater
Wastewater is any water whose quality has been degraded by human use, including domestic sewage, industrial effluent, and stormwater; about 400 km³ is generated worldwide each year, much of it discharged untreated.
Wastewater treatment
Wastewater treatment, also called treatment of wastewater, removes contaminants from used water, chiefly sewage, through screening, settling, biological treatment, and disinfection before discharge or reuse.
Water Act (Netherlands)
The Water Act (Waterwet) is a Dutch law of 29 January 2009 governing the management and use of water systems, which replaced eight earlier statutes and merged six permits into one.
Water chlorination
Water chlorination is disinfection of drinking water with chlorine or chlorine compounds to kill pathogens, in use continuously since Jersey City pioneered it in 1908.
Water conflict
Water conflict, also known as water wars, is dispute or violence between states or communities over shared freshwater, caused by scarcity, dams, pollution, or groundwater abstraction.
Water conservation
Water conservation, also called water preservation, is the practice of reducing water use or waste through efficiency, shorter or less frequent use, and demand management rather than new supply.
Water Corporation (Western Australia)
Water Corporation is the Western Australian Government-owned utility supplying water, wastewater, and drainage services across most of the state, established under the Water Corporation Act 1995.
Water distribution system
A water distribution system, also called a water distribution network, is the network of pipes, pumps, valves, and tanks that carries treated drinking water under pressure from plants to consumers.
Water Framework Directive
The Water Framework Directive (WFD) is Directive 2000/60/EC, the main EU water protection law, requiring Member States to achieve good status for water bodies by managing river basins.
Water hammer
Water hammer, also called fluid hammer, is a pressure wave in a liquid-filled pipe caused by sudden flow changes like rapid valve closure or a pump stopping.
Water in California
Water in California is managed through reservoirs, long-distance aqueducts, groundwater basins, and a dual water rights system that moves northern water to drier southern farms and cities.
Water Industry Act 1991
The Water Industry Act 1991 is a UK Act consolidating the law on water supply and sewerage in England and Wales and setting out water companies' duties.
Water Infrastructure Finance and Innovation Act
The Water Infrastructure Finance and Innovation Act (WIFIA) is a 2014 United States federal law that created an EPA credit program offering long-term, low-cost loans for large drinking water, wastewater, and stormwater projects.
Water ionizer
A water ionizer, known in Japan as an alkaline ionized water apparatus, is a home appliance that electrolyzes tap water into alkaline drinking water and acidic water.
Water main breaks and service outages
A water main break is a rupture in a pressurized pipe that interrupts water service, typically fixed in hours, though major feeder-main repairs can take weeks.
Water Management System of Augsburg
The Water Management System of Augsburg (Augsburger Wassermanagement-System) is a UNESCO World Heritage site of 22 canals, water towers, fountains, and power plants in Bavaria, Germany, inscribed in 2019 for over 700 years of urban water management, including drinking water separation since 1545.
Water metering
Water metering is the measurement of the volume of water delivered through a distribution system to individual customers, used by utilities to bill accurately and identify leakage.
Water politics in the Nile Basin
Water politics in the Nile Basin concerns how eleven countries share the Nile's waters, shaped by colonial-era treaties favoring Egypt and Sudan and by Ethiopia's Grand Ethiopian Renaissance Dam.
Water pricing
Water pricing is the set of charges, tariffs, and fees applied to the abstraction, supply, and use of water, serving cost recovery, environmental costs, and scarcity signaling.
Water privatization in Bolivia
Water privatization in Bolivia transferred urban water services to private companies in the late 1990s; the Cochabamba contract collapsed in 2000 amid the Water War protests.
Water purification
Water purification is the removal of undesirable chemicals, microorganisms, and suspended solids from water to make it suitable for drinking, spanning municipal plants and household devices.
Water Purification Pond
Water Purification Pond: a pond used to treat or store water, spanning farm-pond sand-filter systems, ecological landscape and storm water ponds, Pond-In-Pond wastewater treatment, and the historic Tainan Water Purification Pond.
Water quality
Water quality is a measure of how suitable water is for a particular use, such as drinking, irrigation, or recreation, based on physical, chemical, and biological characteristics.