RT null T1 Quality Assurance for Freshwater Quality Monitoring - Technical Guidance Document A1 United Nations Environment Programme, A2 Beechinor, Greg A2 Chapman, Deborah V. A2 Doran, Linda A2 Lisniak, Dmytro A2 Gonzalez, Lucia Hermida A2 Warner, Stuart A2 Webster, Peter K1 quality assurance K1 freshwater monitoring K1 freshwater quality K1 laboratory test K1 life cycle K1 quality control K1 data quality K1 water quality management K1 microbiological analysis SN 978-92-807-4031-8 YR 2023 FD 2023-06 LK https://wedocs.unep.org/handle/20.500.11822/42666 UL https://wedocs.unep.org/handle/20.500.11822/42666 NO This technical guidance document introduces the principles and practices of quality assurance for freshwater quality monitoring. It is designed for scientists and practitioners working in field and laboratory environments who may not have specialised expertise in quality assurance. The document explains how planned and systematic procedures help ensure that monitoring data accurately represent the condition of water bodies. It outlines the roles of quality assurance and quality control within a broader quality management system and emphasises the importance of establishing clear data quality objectives before monitoring begins. The guidance also describes how monitoring programmes should manage the full sample life cycle, including sampling, handling, transport, analysis, and data verification, to minimise errors and ensure reliable results. Although the focus is on freshwater systems, the principles and procedures described are broadly applicable to other aquatic monitoring contexts, including drinking water, wastewater, and industrial effluent monitoring, where dependable environmental data are required for assessment and decision-making. DS UN Environment Document Repository RD Sep 20, 2026