Water pollution is the contamination of water bodies, usually as a result of human activities, so that it negatively affects its uses. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and groundwater. Water pollution results when contaminants mix with these water bodies. Contaminants can come from one of four main sources: sewage discharges, industrial activities, agricultural activities, and urban runoff including stormwater. Water pollution is either surface water pollution or groundwater pollution. This form of pollution can lead to many problems, such as the degradation of aquatic ecosystems or spreading water-borne diseases when people use polluted water for drinking or irrigation. Another problem is that water pollution reduces the ecosystem services that the water resource would otherwise provide.
A sanitary sewer is an underground pipe or tunnel system for transporting sewage from houses and commercial buildings to a sewage treatment plant or disposal.
Biscayne Bay is a lagoon with characteristics of an estuary located on the Atlantic coast of South Florida. The northern end of the lagoon is surrounded by the densely developed heart of the Miami metropolitan area while the southern end is largely undeveloped with a large portion of the lagoon included in Biscayne National Park.
Wastewater treatment is a process which removes and eliminates contaminants from wastewater and converts this into an effluent that can be returned to the water cycle. Once returned to the water cycle, the effluent creates an acceptable impact on the environment or is reused for various purposes. The treatment process takes place in a wastewater treatment plant. There are several kinds of wastewater which are treated at the appropriate type of wastewater treatment plant. For domestic wastewater, the treatment plant is called a Sewage Treatment. For industrial wastewater, treatment either takes place in a separate Industrial wastewater treatment, or in a sewage treatment plant. Further types of wastewater treatment plants include Agricultural wastewater treatment and leachate treatment plants.
Biosolids are solid organic matter recovered from a sewage treatment process and used as fertilizer. In the past, it was common for farmers to use animal manure to improve their soil fertility. In the 1920s, the farming community began also to use sewage sludge from local wastewater treatment plants. Scientific research over many years has confirmed that these biosolids contain similar nutrients to those in animal manures. Biosolids that are used as fertilizer in farming are usually treated to help to prevent disease-causing pathogens from spreading to the public. Some sewage sludge can not qualify as biosolids due to persistent, bioaccumulative and toxic chemicals, radionuclides, and heavy metals at levels sufficient to contaminate soil and water when applied to land.
Toronto Water is the municipal division of the City of Toronto under Infrastructure and Development Services responsible for the water supply network, and stormwater and wastewater management in Toronto, Ontario, Canada, as well as parts of Peel and York Regions.
Iona Island in Richmond, British Columbia, Canada was formerly an island, but is now a peninsula physically connected to Sea Island via a causeway and Ferguson Road. Iona is home to a primary sewage treatment plant, an animal refuge and a park. The Iona Sewage Plant is located near the centre of the island and has tours for the public. Iona Beach Regional Park also features a beach adjacent to wildlife from the nearby animal refuge. The park is managed by Metro Vancouver. Iona Island is located almost adjacent to the Vancouver International Airport. The park is mostly visited by birders, as the sewage ponds have attracted many rare shorebirds such as Spoon-billed Sandpiper, Great Knot, and Red-necked Stint.
Moon Island is an island in Quincy Bay, in the middle of Boston Harbor, Massachusetts. It is the location of the Boston Fire Department Training Academy, and Boston Police Department shooting range. All of the land on the island is owned by the City of Boston but the island is under the jurisdiction of Quincy, Massachusetts. It is also part of the Boston Harbor Islands National Recreation Area.
The Deer Island Waste Water Treatment Plant is located on Deer Island, one of the Boston Harbor Islands in Boston Harbor. The plant is operated by the Massachusetts Water Resources Authority (MWRA) and began partial operations in 1995. The facility was fully operational in 2000 with the completion of the outfall tunnel.
The Western Treatment Plant is a 110 km2 (42 sq mi) sewage treatment plant in Cocoroc, Victoria, Australia, 30 km (19 mi) west of Melbourne's central business district, on the coast of Port Phillip Bay. It was completed in 1897 by the Melbourne and Metropolitan Board of Works (MMBW), and is currently operated by Melbourne Water. The plant's land is bordered by the Werribee River to the east, the Princes Freeway to the north, and Avalon Airport to the west. It forms part of the Port Phillip Bay and Bellarine Peninsula Ramsar Site as a wetland of international importance. The Western Treatment Plant treats around fifty percent of Melbourne's sewage — about 485 megalitres or 393 acre-feet per day — and generates almost 40,000 megalitres or 32,000 acre-feet of recycled water a year.
Psyttaleia is an uninhabited island in the Saronic Gulf between the harbor of Piraeus and the Kynosoura peninsula on Salamis Island, Greece. It covers an area of 0.375 square kilometers. The island houses Athens' largest sewage treatment plant which also the largest in Europe, with a projected daily maximum drying capacity of 750 tons of sewage. Administratively it is part of the Municipality of Piraeus.
Sewage treatment is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable to discharge to the surrounding environment or an intended reuse application, thereby preventing water pollution from raw sewage discharges. Sewage contains wastewater from households and businesses and possibly pre-treated industrial wastewater. There are a high number of sewage treatment processes to choose from. These can range from decentralized systems to large centralized systems involving a network of pipes and pump stations which convey the sewage to a treatment plant. For cities that have a combined sewer, the sewers will also carry urban runoff (stormwater) to the sewage treatment plant. Sewage treatment often involves two main stages, called primary and secondary treatment, while advanced treatment also incorporates a tertiary treatment stage with polishing processes and nutrient removal. Secondary treatment can reduce organic matter from sewage, using aerobic or anaerobic biological processes. A so-called quarternary treatment step can also be added for the removal of organic micropollutants, such as pharmaceuticals. This has been implemented in full-scale for example in Sweden.
Sewage is a type of wastewater that is produced by a community of people. It is typically transported through a sewer system. Sewage consists of wastewater discharged from residences and from commercial, institutional and public facilities that exist in the locality. Sub-types of sewage are greywater and blackwater. Sewage also contains soaps and detergents. Food waste may be present from dishwashing, and food quantities may be increased where garbage disposal units are used. In regions where toilet paper is used rather than bidets, that paper is also added to the sewage. Sewage contains macro-pollutants and micro-pollutants, and may also incorporate some municipal solid waste and pollutants from industrial wastewater.
Michéal Ó hUiginn was the Mayor of Galway on three separate occasions: from 1972–1973, 1979–1980, and 1995–1996.
Michael Leahy (1932–2007) was an Irish Fianna Fáil politician. He was the Mayor of Galway from 1983–1984, 1991–1992, and 1997–1998.
Nut Island is a former island in Boston Harbor, part of the Boston Harbor Islands National Recreation Area. The island has been connected through a short causeway to the end of Houghs Neck, becoming part of the mainland of Quincy, Massachusetts.
Chennai Metropolitan Water Supply and Sewerage Board, known shortly as CMWSSB, is a statutory board of Government of Tamil Nadu which provides water supply and sewage treatment to the city of Chennai and its metropolitan region.
South Trees is a coastal industrial suburb of Gladstone in the Gladstone Region, Queensland, Australia. In the 2021 census, South Trees had no population.
Moa Point is a small suburb in Wellington, New Zealand, situated on the south coast between Lyall Bay to the west and Tarakena Bay to the east. As of 2015 there were 21 households in the suburb.
