AXIO | Proficiency Testing schemes 2026
Water Microbiology QWAS
“Samples targeting many different water types”
Our Water Microbiology Scheme (QWAS) is the world’s largest water microbiology programme, trusted by more than 1,000 participating laboratories globally. Established in 2002, it offers a comprehensive choice of samples – aimed at potable, process, mineral, effluent sludge, industrial, surface/waste/bathing, recreational, sea, dialysis and waste waters. In addition, QWAS features our best-selling PT-WT-412 sample for the enumeration of E.coli , coliforms, and Enterococci (faecal streptococci). As well as helping laboratories ensure water safety, and comply with testing regulations in a wide range of countries and regions, successful participation in QWAS can provide laboratories with confidence in their results and the equipment they use.
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Download Scheme Description
The full range and availability of test materials and analytes is determined on an annual basis and may be added or removed. For accredited and non-accredited status, plus the most up to date sample data, please see the current application form/scheme description for this scheme.
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