​The Division’s laboratories successfully participate in a number of inter-laboratory performance testing studies such as:

● Water Pollution Laboratory Performance Evaluation Study

● Water Supply Laboratory Performance Evaluation Study

● Radiochemistry Performance Evaluation Studies

● USGS Standard Reference Sample Project

● NVLAP Bulk Asbestos Program

● CDC Fluoridation Water Proficiency Testing Program

● FERN Proficiency Evaluation

● CDC Proficiency Studies for cyanide in blood, metals in urine and blood, VOCs, abrine and ricinine in blood, and metabolites of nerve agents, monofluoroacetate, monochloroacetate, and tetramine in urine.