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Updated Lists of Approved Analytical Methods Available

EPA maintains lists of all approved drinking water analytical methods on their website at http://water.epa.gov/scitech/drinkingwater/labcert/analyticalmethods.cfm.  These lists include methods approved through the normal contaminant regulation process and the methods approved separately through the expedited methods approval process.  On this site, EPA has recently added updated listings for Approved Methods for Inorganic Contaminants and other Inorganic Constituents, Approved Methods for Radionuclides, Approved Methods for Organic Contaminants, and Recommended Methods for Secondary Contaminants.   The listings include the specific name, number, and reference for the method, including where the full method can be obtained.