United States regulation of point source water pollution: Point source water pollution comes from discrete conveyances and alters the chemical, biological, and physical characteristics of water. It is largely regulated by the Clean Water Act (CWA) of 1972.Air pollution: Air pollution is the introduction of particulates, biological molecules, or other harmful materials into Earth's atmosphere, causing diseases, death to humans, damage to other living organisms such as animals and food crops, or the natural or built environment. Air pollution may come from anthropogenic or natural sources.Water quality law: Water quality laws govern the release of pollutants into water resources, including surface water, ground water, and stored drinking water. Some water quality laws, such as drinking water regulations, may be designed solely with reference to human health.Outline of water: The following outline is provided as an overview of and topical guide to water:Public water systemBulloo-Bancannia drainage basin: The Bulloo-Bancannia drainage basin is a drainage basin that covers part of western Queensland and New South Wales. It is adjacent to the much larger Lake Eyre basin.Fecal coliform: A fecal coliform (British: faecal coliform) is a facultatively anaerobic, rod-shaped, gram-negative, non-sporulating bacterium. Coliform bacteria generally originate in the intestines of warm-blooded animals.Great Lakes Environmental Research Laboratory: right|300px|thumb|Great Lakes Environmental Research Laboratory logo.Angang Sewage Disposal Plant: The Angang Sewage Disposal Plant is a sewage treatment plant located in the city of Gyeongju, North Gyeongsang province, South Korea. It began operating in April, 2005 by the co-investment of the Government of North Gyeongsang and Gyeongju City with a fund of 44,300,000,000 won to install the facilities to prevent the pollution of Hyeongsan River which is a main water source for Gyeongju and Pohang residents.P-AnisidinePolarized light pollution: Polarization is a property of light waves that describes the orientation of their oscillations. Polarized light pollutionGábor Horváth, György Kriska, Péter Malik, Bruce Robertson.Particulates: Atmospheric particulate matter – also known as particulate matter (PM) or particulates – is microscopic solid or liquid matter suspended in the Earth's atmosphere. The term aerosol commonly refers to the particulate/air mixture, as opposed to the particulate matter alone.Metal sulfur dioxide complex: Metal sulfur dioxide complexes are complexes that contain sulfur dioxide, SO2, bonded to a transition metal. Such compounds are common but are mainly of theoretical interest.Indoor air pollution in developing nations: Indoor air pollution in developing nations is a significant form of indoor air pollution (IAP) that is little known to those in the developed world.Exhaust gasOzone Action Day: An Ozone Action Day, which can be declared by a local municipality, county or state, is observed at certain times during the summer months, when weather conditions (such as heat, humidity, and air stagnation) run the risk of causing health problems.Tissue hydration: Tissue hydration is the process of absorbing and retaining water in biological tissues.Jardine Water Purification PlantCoulter counter: 150px|thumb|right|The tip of the Coulter counter in a buffer solution, counting cells in solution.Four Seasons Baltimore and Residences: Four Seasons Hotel Baltimore is currently a 22 story highrise hotel complex building which opened on November 14, 2011. The building's construction began back in 2007 and went through several changes.