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Arsenic contamination of ground water is found in many countries throughout the world, including the US. [2] The World Health Organization recommends limiting arsenic concentrations in water to 10 μg/L, although this is often an unattainable goal for many problem areas due to the difficult nature of removing arsenic from water sources. [3]
Throughout the years, many studies reported dose-dependent effects of arsenic in drinking water and skin cancer. In order to prevent new cases and death from cancerous and non-cancerous diseases, the Safe Drinking Water Act directed the Environmental Protection Agency to revise arsenic's levels and specified the maximum contaminant level (MCL).
The toxic effects of arsenic, mercury and lead were known to the ancients but methodical studies of the overall toxicity of heavy metals appear to date from only 1868. In that year, Wanklyn and Chapman speculated on the adverse effects of the heavy metals "arsenic, lead, copper, zinc, iron and manganese" in drinking water. They noted an ...
A recent study by the Center for Environmental Health has revealed high levels of arsenic in two brands of bottled water sold by Whole Foods and Walmart.
Groundwater pollution (also called groundwater contamination) occurs when pollutants are released to the ground and make their way into groundwater.This type of water pollution can also occur naturally due to the presence of a minor and unwanted constituent, contaminant, or impurity in the groundwater, in which case it is more likely referred to as contamination rather than pollution.
On Jan. 7, as the L.A. County wildfires broke out, air samples measured "highly elevated levels" of lead and arsenic over a dozen miles downwind of the Eaton fire, according to the South Coast Air ...
Scientists hope that by analyzing the data from urban fires, we can get a clearer picture of just how harmful they are. Jennifer Gray is a weather and climate writer for weather.com. She has been ...
Mining can have harmful effects on surrounding surface and groundwater. [10] If proper precautions are not taken, unnaturally high concentrations of chemicals, such as arsenic, cyanide, sulphuric acid, and mercury can spread over a significant area of surface or subsurface water. [11]