Arsenic Molecule as may be present in well water

     Arsenic (As) is the 20th most abundant element in the Earth’s crust.  It is used in the production of metal alloys, manufacture of insecticides, pressure treatment of wood and as treatment for certain medical conditions.  The contribution of arsenic to the groundwater from man-made sources is low.  Most of the problems arise from natural deposits.  Water often passes through many layers of rock on its way to the water table.  In many cases, conditions are right for water to pick up arsenic along the way.

Chose from several water testing kits.

     For removal of arsenic in drinking water the preferred method that is highly effective is reverse osmosis (RO).  Reverse osmosis drinking water systems are very reasonably priced and can be easily maintained by the average homeowner.

See recommended reverse osmosis systems for arsenic removal in well drinking water.

See specialty water filters designed for arsenic removal.

Arsenic map of contaminants in drinking water as reported by the USGS.

Arsenic contaminants in drinking well water map














     Concentrations of arsenic were greater than the U.S. Environmental Protection Agency Maximum Contaminant Level of 10 micrograms per liter in about 7 percent of wells nationally and were found at these concentrations in wells from several aquifer types. >, greater than; >, greater than or equal to; <, less than or equal to; <, less than.