Arsenic In Water

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Arsenic is an abundant, naturally occurring element that can be found at varying concentrations in the Earth’s outer crust around the world. Inorganic arsenic compounds found in water are highly toxic while organic arsenic compounds (such as the arsenobetaine found in seafood) are generally less harmful to health.

It is important to understand that arsenic cannot be destroyed in the environment. It can only change its form. Most inorganic and organic arsenic compounds are white or colorless powders that do not evaporate, but can be attached to tiny particles that will inevitably become airborne.

When airborne particles are tiny enough, they can stay suspended by air currents for days and travel many thousands of miles from their original point of origin.
These particles will eventually hit the ground courtesy of gravity or precipitation (rain, snow etc…). Many common arsenic compounds can easily dissolve in water, so arsenic can get into lakes and rivers, and is not only found in groundwater.

Currently, the primary recognized cause of unintentional arsenic consumption is from drinking groundwater that contains arsenic. Surveys of US drinking water indicate that about 80 percent of water supplies have less than 2 ppb of arsenic, but two percent of supplies exceed 20 ppb of arsenic.