Do Contaminants Originating from State-of-the-Art Treated Wastewater Impact the Ecological Quality of Surface Waters?
This study highlights the importance of reducing the wastewater-associated impact on surface waters. For aquatic ecosystems in urban areas this would lead to: (i) improvement of the ecological integrity, (ii) reduction of biodiversity loss, and (iii) faster achievement of objectives of legislative requirements, e.g., the European Water Framework Directive.
Shigellosis Outbreak Associated with Contaminated Well Water in a Rural Elementary School: Sichuan Province, China, June 7–16, 2009
This investigation of shigellosis outbreak in an elementary school in Sichuan Province, China, identified the source of infection, mode of transmission and risk factors for illness, and concluded that this shigellosis outbreak was caused by drinking untreated water from a well polluted by Shigella flexneri 2b.
Soon after the transition was made, residents began complaining about the quality of the water, noting its strange color, taste, and smell. With proceeding investigations, it was found that the Flint river, and therefore the water being supplied to the community, was contaminated with almost unprecedented amounts of lead.
On November 8th, the Liberal minister of environment, Catherine McKenna, approved Montreal’s plan to dump 8 billion liters of untreated sewage into the St. Lawrence River.
Unusually warm ocean water has caused a huge algae bloom along the west coast of the United States. Also known as “Red Tide” or harmful algae blooms (HABs), Domoic acid has severely impacted marine life, shutting down most of California’s crab fisheries.
The Fundão dam, operated by the mining company Samarco, collapsed first and spilled into the Santarém dam and waste from both began to flow to nearby cities and into a vital river. The toxic mud wave, which has been slowly traveling down the Rio Doce for several weeks, has now reached the Atlantic, adding a dangerous mix of arsenic, zinc, copper, mercury, and other substances to the water during its 500-kilometer journey.
Citizens of Bangladesh have been suffering from the consequences of arsenic poisoning for years. This situation is often referred to as one of the largest mass poisonings of all time.
Awareness of the presence of a cryptosporidium microbial parasite occurred when traces were identified in one of United Utilities’ many water treatment plants in Preston, England, which mainly affected parts of the Lancashire region. According to their estimates, about 2,500 miles of pipeline were contaminated.
The issue arose when officials from the OCWD began to observe unusual spikes “in arsenic after it percolated into soils and sediments from surface basins into underground storage aquifers”. What was specifically unusual was that the water that absorbed this excess arsenic had “undergone a rigorous purification process”.
The Gold King Mine has been leaking fluids into its surrounding area since its shuttering in 1923. This has resulted in the formation of dozens of toxic wells in its immediate vicinity.