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United States Environmental Protection Agency
Long Term 2 Enhanced Surface Water Treatment Rule (LT2)
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Laboratory Quality Assurance Evaluation Program for Analysis of Cryptosporidium under the Safe Drinking Water Act

The purpose of this Laboratory Quality Assurance Program is to maintain a list of laboratories that can reliably measure the occurrence of Cryptosporidium in surface water using EPA Method 1622 and/or EPA Method 1623. Participating laboratories continue to demonstrate proficiency with experienced personnel who have successfully demonstrated their capability.

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As of May 2007, EPA estimates that sufficient laboratory capacity exists for the LT2.  EPA has generally postponed evaluation of additional laboratories, including commercial, county, municipal and utility laboratories, until further notice. EPA will consider evaluation of State and EPA Regional laboratories on a case-by-case basis, resources permitting, based on the role that States and EPA Regions play in the certification and approval programs for laboratories.

Carrie Miller, Manager, Cryptosporidium Laboratory Approval Program
U.S. Environmental Protection Agency
Office of Ground Water and Drinking Water, Technical Support Center
26 West Martin Luther King Dr. (MS-140)
Cincinnati, Ohio 45268
fax number, (513) 569-7191
e-mail address: miller.carrie@epa.gov

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List of Laboratories Approved for the Analysis of Cryptosporidium Under the Safe Drinking Water Act

The following laboratories have passed the Laboratory Quality Assurance Evaluation Program for Analysis of Cryptosporidium under the Safe Drinking Water Act, and have been granted "Approved" status. The purpose of the Lab QA Program is to identify laboratories that can reliably measure the occurrence of Cryptosporidium in surface water using EPA Method 1622 and/or EPA Method 1623.

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