In November 1999, the Environmental Working Group (EWG), an environmental organization, issued a memorandum entitled "Tap Water in 38 Central California Cities Tainted with Banned Pesticide Some Bottle-Fed Infants May Exceed 'Safe' Dose Before Age 1" (EWG, 1999). They determined that 1,2-dibromo-3-chloropropane (DBCP; CAS #96-12-8), a nematocide whose use was discontinued more than 20 years ago, still exists in drinking water at concentrations that they assert may pose a health risk to humans, particularly infants and young children.