Water Filters Blog: Water Quality & Water Filtration Systems

Link: http://www.waterworld.com/index/display/article-display/0573079565/articles/waterworld/volume-27/issue-10/departments/washington-update/usgs-examines-trace-elements-in-untreated-water-supplies.html

Oct 3, 2011. Water World.  Trace elements in Untreated Water Supplies, By Patrick Crow, Washington Correspondent

The U.S. Geological Survey (USGS) has reported that about 20% of untreated water samples from public, private, and monitoring wells across the nation contain concentrations of at least one trace element such as arsenic, manganese and uranium at levels of potential health concern.

USGS said at public wells, regulated by the U.S. Environmental Protection Agency (EPA), contaminants are removed from the water before people drink it, but they may not be removed at unregulated private wells. Click for the complete article.