水質監測 水質監測是確保食水安全的基本工具。我們實施全面的水質監 測計劃，對從水源* 到用戶水龍頭所收集的食水樣本進行一系 列的物理、化學、細菌、生物和輻射檢測，以監測整個供水系 統的水質。樣本收集範圍包括木湖抽水站的東江水接收點、集 水區與相關設施、水塘、濾水廠、配水庫、食水缸、分配系統 和用戶水龍頭。本年內共收集及檢測超過 17 萬個樣本。 Water Quality Monitoring Water quality monitoring is a fundamental tool to drinking water safety. We undertake comprehensive programmes through a series of physical, chemical, bacteriological, biological and radiological examinations of samples collected from sources* to consumers’ taps to monitor water quality in the entire water supply system. These range from the reception point of Dongjiang water at the Muk Wu Raw Water Pumping Stations, catchment areas and related facilities, impounding reservoirs, water treatment works, service reservoirs, fresh water tanks, distribution systems and consumers’ taps. During the year, more than 170 000 samples were collected and tested. 收集及檢測超過17 萬個原水和食水樣本作全面測量，以確保優質食水。 Over 170 000 raw and drinking water samples were collected and tested for comprehensive examinations to ensure quality drinking water. * Water sources includes Dongjiang water and rainwater collected from local water gathering grounds. * 水源包括東江水和本地集水區收集的雨水。 使用液 - 液萃取，提取水樣 本中微量的有機化合物。 Extract trace organic compounds from water samples by using liquidliquid extraction. 使用微生物菌落計數器檢 查水樣本的細菌品質。 Examine the bacteriological quality of water samples through a microbial colony counter. 測量食水樣本的餘氯含量。 Examine residual chlorine levels in drinking water samples. 使用電感耦合等離子體質譜儀 檢測水樣本中的微量金屬。 Measure trace metal contents in water samples using an inductively coupled plasma mass spectrometer. 使用低本底阿爾法- 貝他粒 子計數系統檢測水樣本的 總α和總β的活度。 Monitor gross alpha and gross beta activity in water samples with a low level alpha-beta counting system. 使用濁度計檢測水樣本 的混濁度。 Measure turbidity in water samples with a turbidimeter. 水務署 二零二二至二三年年報 WSD Annual Report 2022/23 41 Scale up 升 級 開 拓
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