優化食水水質監測 多年來，我們實施一套食水水質監測計劃，於濾水廠、配水庫、 食水缸、供水接駁點和公眾可達的用戶水龍頭（例如商場、診 所、社區設施、運動場、街巿、政府辦事處及屋邨管理處等地 方的水龍頭）抽取食水樣本，以監測食水水質，並建立全港食 水水質數據庫以檢討香港食水標準。 我們亦推出「水質監測優化計劃」，藉此加強水質監測範圍至 用戶水龍頭，透過在全港隨機抽出處所，並在其用戶水龍頭收 集食水樣本，檢測可能在內部供水系統出現的六種金屬，即銻、 鎘、鉻、銅、鉛和鎳。我們亦由二零二一年五月起，從上述的 用戶水龍頭額外收集食水樣本化驗餘氯和埃希氏大腸桿菌。有 關這六種金屬、餘氯和埃希氏大腸桿菌的水質統計數據，每周 於水務署網站上公布。 水塘的無人船系統 為提升水塘水質監測，水務署人員自二零一一年發起使用無人 船系統於水塘進行自動監測水質和取樣，以便下游濾水廠更有 效控制食水處理過程，確保食水安全。系統至今已經發展到第 四代。 我們現正提升無人船系統並引入自動規劃航線及自動作出應變 的功能，系統提升後能夠自動增加監測點以收集更多數據；以 及在實時感應器錄得異常水質讀數時進行額外取樣，提升運作 效率和緊急狀況應變能力。並計劃於二零二四年第一季完成提 升無人船系統。 每艘無人船均配置了水質監 測裝置，用於監測溫度、導 電率、混濁度、溶解氧、酸 鹼值、葉綠素 -a 和藍綠藻； 以及自動導航系統和避障系 統，在運行時能繞過障礙物。 Enhancing Drinking Water Quality Monitoring Over the years, we have implemented a drinking water quality monitoring programme to collect drinking water samples from water treatment works, service reservoirs, fresh water tanks, connection points and publicly accessible consumers’ taps (such as those in shopping centres, clinics, community facilities, sports grounds, markets, government offices and estate management offices) to monitor the quality of drinking water and facilitate the creation of a territory-wide database for reviewing the HKDWS. We have also launched the “Enhanced Water Quality Monitoring Programme” to strengthen our water quality monitoring at consumers’ taps in randomly selected premises in Hong Kong, and collect drinking water samples from these drinking taps for testing six metals, namely antimony, cadmium, chromium, copper, lead and nickel that could be present in internal plumbing systems. Starting from May 2021, we have collected additional drinking water samples from these drinking taps for testing residual chlorine and Escherichia coli (E.coli ). The water quality statistics for the six metals, residual chlorine and E.coli will be published every week on the WSD’s website. Unmanned Surface Vessels System at Impounding Reservoirs To advance water quality monitoring, since 2011, our staff have initiated the project on the smart use of unmanned surface vessel (“USV”) system to perform automatic water quality monitoring and sampling in impounding reservoirs which facilitate the effective control of water treatment process at downstream water treatment works to ensure the safety of drinking water supply. The system is currently at its fourth generation of development. During the year, we are progressing further enhancements in the USV system to introduce automatic route planning and response. These enhancements enable the USV system to automatically increase the number of monitoring points to collect more data; as well as additional water samples from the reservoir when abnormal water quality is detected by the real-time sensors of the USV, thereby boosting operational efficiency and emergency responsiveness. The Enhanced USV system is scheduled for completion by the first quarter of 2024. Each USV system is equipped with a water quality monitoring unit to monitor temperature, conductivity, turbidity, dissolved oxygen, pH, chlorophyll-a and blue green algae; as well as autonavigation and obstacle avoidance systems for navigating around obstacles during operation. 水務署 二零二二至二三年年報 WSD Annual Report 2022/23 43 Scale up 升 級 開 拓
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