水質監測 水質監測是確保水資源得以妥善保護和管理的基本工作。我們 實施全面的水質監測計劃，對原水* 和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。 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 Quality Monitoring Water quality monitoring is a fundamental tool to ensuring our freshwater resources are properly protected and managed. We undertake comprehensive programmes through a series of physical, chemical, bacteriological, biological and radiological examinations of our raw water* and drinking water samples 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. * Raw water includes Dongjiang water and rainwater collected from local water gathering grounds. * 原水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 liquid-liquid 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 level 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 系統監測水樣本的總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. 使用濁度計測量水樣本的 混濁度。 Measure turbidity in water samples with a turbidimeter. 現新 Innovate 水務署 二零二一至二二年年報 WSD Annual Report 2021/22 41
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