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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 ...
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 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.
A documented 98% of the state has access to drinkable water, though some studies note that access disparities exist. [15] Despite modern data and methods for agricultural safety, 92 water systems in the Central Valley were attached to wells containing illegal levels of nitrates between 2005 and 2008, impacting the 1,335,000 residents in the ...
hyperaccumulators and contaminants : Al, Ag, As, Be, Cr, Cu, Mn, Hg, Mo, naphthalene, Pb, Se, Zn – accumulation rates ; Contaminant Accumulation rates (in mg/kg dry ...
According to the study, particularly high levels of arsenic were found in northwestern states, and high levels of cobalt were detected in honey from the Southeast.Arsenic was found in 89% of all ...
"This exceedance of the arsenic drinking water standard is further evidence that violations have occurred at CRRUA," the NMED press release stated. The NMED sent the utility an information demand ...
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.