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ISO 20760-1:2018WithdrawnWater reuse in urban areas — Guidelines for centralized water reuse system — Part 1: Design principle of a centralized water reuse systemISO 20760-2:2017WithdrawnWater reuse in urban areas — Guidelines for centralized water reuse system — Part 2: Management of a centralized water reuse systemISO 22032:2006WithdrawnWater quality — Determination of selected polybrominated diphenyl ethers in sediment and sewage sludge — Method using extraction and gas chromatography/mass spectrometryISO 22519:2019WithdrawnPurified water and water for injection pretreatment and production systemsISO 23913:2006WithdrawnWater quality — Determination of chromium(VI) — Method using flow analysis (FIA and CFA) and spectrometric detectionISO 24510:2007WithdrawnActivities relating to drinking water and wastewater services — Guidelines for the assessment and for the improvement of the service to usersISO 24511:2007WithdrawnActivities relating to drinking water and wastewater services — Guidelines for the management of wastewater utilities and for the assessment of wastewater servicesISO 24512:2007WithdrawnActivities relating to drinking water and wastewater services — Guidelines for the management of drinking water utilities and for the assessment of drinking water servicesISO 24521:2016WithdrawnActivities relating to drinking water and wastewater services — Guidelines for the management of basic on-site domestic wastewater services