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Arsenic contamination of groundwater is a form of groundwater pollution which is often due to naturally occurring high concentrations of arsenic in deeper levels of groundwater. It is a high-profile problem due to the use of deep tube wells for water supply in the Ganges Delta, causing serious arsenic poisoning to large numbers of people. A ...
For example, median levels in Nevada were about 8 μg/L [15] but levels of naturally occurring arsenic as high as 1000 μg/L have been measured in the United States in drinking water. [16] Groundwater associated with volcanics in California contain As at concentrations ranging up to 48,000 μg/L, with As-bearing sulfide minerals as the main ...
Common sources include fertilisers; [17] aging water supply infrastructure; [18] and microplastics floating in the world's oceans. [19] [20] Arsenic is thought to be used in connection with coloring dyes. [21] Rat poison used in grain and mash stores may be another source of the arsenic. [22] The geographical extent of sources may be very large.
Update: This article has been updated to include a statement from Starkey Water. A recent study by the Center for Environmental Health (CEH) has revealed high levels of metal arsenic in two brands ...
KEYPORT — A slag-like material on the beach in Keyport contains high levels of arsenic and should be avoided, state environmental officials warned.
Arsenic is found in clay strata due to their high surface area to volume ratio relative to sand-sized particles. Most pumped groundwater travels through sands and gravels with low arsenic concentration. However, during over-pumping, a high vertical gradient pulls water from less-permeable clays, thus promoting arsenic release into the water. [59]
The Managem Group in a statement denied the findings published in German newspaper Suddeutsche Zeitung that pointed to increased levels of arsenic in the water near its century-old cobalt mine at ...
Arsenic may be solubilized by various processes. When pH is high, arsenic may be released from surface binding sites that lose their positive charge. When water level drops and sulfide minerals are exposed to air, arsenic trapped in sulfide minerals can be released into water. When organic carbon is present in water, bacteria are fed by ...
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