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  • standard for perchlorate
  • As of June 2010, there is no federal regulatory standard for perchlorate in drinking water, and the Environmental Protection Agency (EPA), which has the authority to regulate contaminants in public drinking water systems, had not determined whether to establish one. (gao.gov)
  • In the absence of a federal regulatory standard for perchlorate in drinking water, California and Massachusetts have adopted their own standards. (gao.gov)
  • groundwater
  • NASA is in the midst of a cleanup at the Jet Propulsion Laboratory in California and is monitoring the level of perchlorate in groundwater at three other facilities. (gao.gov)
  • In addition, DOE is cleaning up perchlorate at two facilities involved in high explosives research, development, and testing and is monitoring the level of perchlorate in groundwater at two other facilities. (gao.gov)
  • 2001
  • EPA conducted one nationwide perchlorate sampling, between 2001 and 2005, and detected perchlorate at or above 4 parts per billion in 160 of the 3,865 public water systems tested (about 4.1 percent). (gao.gov)
  • water
  • In response to a push from lawmakers, the State Water Resources Control Board has called a hearing to evaluate progress toward cleaning up widespread perchlorate contamination emanating from a 160-acre industrial site in Rialto. (pe.com)
  • Perchlorate has been found in water and other media at varying levels in 45 states, as well as in the food supply, and comes from a variety of sources. (gao.gov)
  • When DOD detects perchlorate at or above threshold levels--currently 15 parts per billion for water--DOD is to investigate further and may take additional actions. (gao.gov)
  • EPA's
  • In 31 of these 160 systems, perchlorate was found above 15 parts per billion, EPA's current interim health advisory level. (gao.gov)