Laboratory Certifications
Current Certificates Issued to the National Water Quality Laboratory
- State of New York (Issued April 1, 2008 Expires April 1, 2009)
- State of Florida (Effective July 1, 2007 through June 30, 2008)
- State of Texas (Effective December 5, 2007 Expires December 31, 2008)
Please note, NWQL's drinking water certification from the State of Colorado expired June 1, 2004.
Currently, the NWQL has no plans to seek further accreditation for USEPA drinking water methods.
The NWQL maintains NELAP certification through New York State for nonpotable waters using USGS methods.
- State of Colorado - 2003 Certificates
- Gross Alpha Gross Beta Certificate (Effective May 1, 2003 through May 31, 2004)
- Drinking Water Constituents Certificate (Effective May 1, 2003 through May 31, 2004)
- State of Colorado - 2002 Certificates
- Gross Alpha, Gross Beta Certificate (Effective June 1, 2002 through May 31, 2003)
- Drinking Water Constituents Certificate (Effective June 21, 2002 through May 31, 2003)
- NWQL Drinking Water Technical Memorandum 97.05
For inquiries contact: Mary Cast (mecast@usgs.gov)
Last modified by Tiffani A Shockey
