What are the natural and man-made sources of the contaminants found in domestic wells?
Except for nitrate, which is primarily from man-made sources, the contaminants that were present most frequently at concentrations greater than human-health benchmarksfor example, radon, arsenic, and uraniumwere from natural geologic sources. These contaminants originate from the rocks and sediments that make up the aquifers from which the domestic wells withdraw water. Nitrate can originate from man-made sources such as fertilizer or septic systems.
Related Questions
- Where is more information available about the potential health effects associated with the contaminants found in the sampled domestic wells?
- How frequently were contaminants present in the sampled domestic wells at levels greater than human-health benchmarks?
- What are the natural and man-made sources of the contaminants found in domestic wells?
