Chemicals Found in Water

While I was at the Environmental working Group's website I just happened to stumble on this doozie of a summary of chemicals found in domestic water supplies.
Here it is;
Chemicals found in Water: Organochlorine Pesticides (OCs), Metals, Lead compounds, Arsenic compounds,Cadmium compounds, Phthalates, Volatile and semivolatile organic compounds (VOCs and SVOCs),Polychlorinated biphenyls (PCBs), Polyaromatic hydrocarbons (PAHs), Perfluorochemicals (PFCs), Chromium compounds, Bisphenol A & BADGE, Mercury compounds, Substituted benzenes, Phenols, Perchlorate, Inorganic salts, Miscellaneous pesticides, Haloacetic acids, Halogenated benzenes, Short halogenated compounds,Alkanes, Petroleum distillates and process streams, Cresols, Unidentified or misc. family, Ethers, Nitrosamines,Brominated Fire Retardants, Trihalomethanes (THMs), Chlorinated dioxins & furans, Organophosphate Pesticides (OPs), Inorganic compounds, Zinc compounds, Amphibole-group minerals, Vanadium compounds,Titanium compounds, Thallium compounds, Molybdenum compounds, Lithium compounds, Cobalt compounds,Beryllium compounds, Antimony compounds, Sodium compounds, Strontium compounds, Silver compounds,Selenium compounds, Potassium compounds, Nitrate compounds, Nickel compounds, Manganese compounds,Magnesium compounds, Inorganic ions, Fluoride compounds, Copper compounds, Barium compounds,Aluminium compounds, Noble gas, Radioactive particles, Uranium compounds, Iron compounds, Calcium compounds, Ionizing radiation

I just love that one right in the middle of the list; "Unidentified or Misc family".