In the chemical families: Inorganic salts, Nitrate compounds
Nitrates are nitrogen-oxygen compounds released into the environment from the widespread use of nitrogen-based fertilizers, human sewage and animal manure. High nitrate levels in well water can cause the sometimes-fatal “blue baby†syndrome in infants, impairing the blood’s capacity to carry oxygen. Over years, adults consuming excess nitrates can suffer kidney and spleen damage. According to the Agency for Toxic Substances and Disease Registry, nitrates can react with the body’s amino acids to form nitrosamines, linked to cancer in test animal studies. The U.S. Environmental Protection Agency sets a limit of 10 parts per million for nitrates in drinking water.
http://www.ewg.org/chemindex/chemicals/23535http://www.idph.state.il.us/envhealth/f ... rateFS.htmhttp://www.nitrates.com/http://www.ext.colostate.edu/pubs/crops/00517.htmlhttp://www.nitrate.com/nitrate2.htmhttp://www.sixwise.com/newsletters/07/0 ... d-them.htmhttp://www.beyondpesticides.org/dailynewsblog/?p=3843