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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).
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]
The drinking water contaminants that can have chronic effects include chemicals (such as disinfection byproducts, solvents and pesticides), radionuclides (such as radium), and minerals (such as arsenic). Examples of these chronic effects include cancer, liver or kidney problems, or reproductive difficulties. [35]
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.
When it came to heavy metal levels, only one product was flagged: Starkey Spring Water. It had arsenic levels more than three times that of CR's recommended level of 3 parts per billion, but fell ...
The water’s safe to drink.” ... after being informed that initial testing showed elevated levels of arsenic in the tap water. The city first alerted tenants to the threat that night ...
Maximum contaminant levels (MCLs) are standards that are set by the United States Environmental Protection Agency (EPA) for drinking water quality. [ 1 ] [ 2 ] An MCL is the legal threshold limit on the amount of a substance that is allowed in public water systems under the Safe Drinking Water Act (SDWA).
Increased levels of skin cancer have been associated with arsenic exposure in Wisconsin, even at levels below the 10 ppb drinking water standard. [147] According to a recent film funded by the US Superfund , millions of private wells have unknown arsenic levels, and in some areas of the US, more than 20% of the wells may contain levels that ...