The Center for Environmental Health has reportedly sued several grocery chains in California alleging that independent testing has shown that the honey they were selling contains high levels of lead in violation of Proposition 65 (Prop. 65). Some of the honey purchased and tested allegedly contained lead levels more than double the legal limit. According to the center, honey suppliers sometimes use metal barrels with lead solder that can leach into the honey. It is seeking agreements that would bind the companies to use non-leaded containers for their honey and to test their supplies for lead content. See Center for Environmental Health News Release, May 2, 2012.