TM97-05 Using the National Water Quality Laboratory for the analysis of drinking water samples

This memorandum provides guidance for Water Resources Division (WRD) District personnel in requesting National Water Quality Laboratory (NWQL) chemical analyses that meet the regulatory requirements of the U.S. Environmental Protection Agency's (USEPA) drinking-water program. These analyses are specific to drinking-water methodologies approved by USEPA Region 8 and the Colorado Department of Public Health and Environment (CDPHE). The use of these USEPAapproved methodologies is mandated by the Safe Drinking Water Act (SDWA), last revised in August 1996, and regulated in most cases by individual States through the USEPA.