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The major river in Ethiopia is the Blue Nile. However, most drinking water in Ethiopia comes from ground water, not rivers. Ethiopia has 12 river basins with an annual runoff volume of 122 billion m 3 of water and an estimated 2.6–6.5 billion m 3 of ground water potential.
3 March 2021 EPA announced that it will develop national drinking water standards for PFOA and PFOS. [109] 17 March 2021 EPA announced plans to revise wastewater standards (effluent guidelines) for manufacturers of PFAS chemicals. [110] 21 April 2021 3M sues the state of Michigan, seeking to invalidate its new drinking water standards. [111]
Per- and polyfluoroalkyl substances (PFAS[1] or PFASs[2]) are a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain; there are 7 million such chemicals according to PubChem. [3] PFAS came into use after the invention of Teflon in 1938 to make fluoropolymer coatings and products that ...
More than 40 million Americans get their drinking water not from the public supply but from private sources, and nearly all of them rely on groundwater that could contain a hidden threat: a class ...
The military is the most common culprit named among the 168 water systems that pointed to a PFAS source and also reported contamination above limits the EPA set earlier this year, USA TODAY's ...
Perfluorobutanesulfonic acid (PFBS) is a PFAS chemical compound having a four-carbon fluorocarbon chain and a sulfonic acid functional group. It is stable and unreactive because of the strength of carbon–fluorine bonds. It can occur in the form of a colorless liquid or a corrosive solid. [1] Its conjugate base is perfluorobutanesulfonate ...
The EPA standard for PFAS in drinking water is now 4 parts per trillion, down from 70 ppt. Health and environmental advocates have sought such a standard for decades in the face of stiff industry ...
Piped water is still the most important source of drinking water (39%) in urban areas, yet boreholes are becoming more important (24%). [3] The WHO (2006) stated that, in 2004, only 16% of people in sub-Saharan Africa had access to drinking water through a household connection (an indoor tap or a tap in the yard).