確保東江水水質 根據現行的《東江供水協議》，廣東省當局致力維持輸港東江 水水質符合國家《地表水環境質量標準》（GB 3838-2002）第 II 類水的標準，此為最高的標準級別並適用於生活飲用水一級 保護區。 為防止輸港東江水受到污染，當局更採取了一系列措 施和工程： • 於深圳水庫設立生物硝化站； • 興建東深專用輸水管道； • 進行河流污水分流工程和污染防治； • 設立東江流域水量水質監測和控制系統； 以及 • 完成沙灣河水環境綜合整治工程。 我們在木湖原水抽水站設置在線水質監測系統，對東江水水質 進行 24 小時監測。我們亦會定期於木湖抽水站抽取樣本作詳 細分析，確保供港的東江水符合國家標準。 Ensuring Dongjiang Water Quality Under the current Dongjiang Water Supply Agreement, the Guangdong authorities ensure the quality of Dongjiang water delivered to Hong Kong meets the national standard for Type II waters in the "Environmental Quality Standards for Surface Water" (GB 3838-2002), which is the highest standard applicable to the abstraction for human consumption in first-class protection area. A series of measures and projects have been adopted to prevent the contamination of Dongjiang water delivered to Hong Kong: • provision of a bio-nitrification plant at the Shenzhen Reservoir; • construction of dedicated aqueduct from Dongjiang to Shenzhen Reservoir; • undertaking of river sewage diversion works and pollution prevention; • implementation of the Dongjiang Basin Water Quantity and Quality Monitoring and Control System; and • completion of the comprehensive remediation project for the water environment of the Sha Wan River Basin . Through our online water quality monitoring system, we monitor the quality of Dongjiang water round the clock at the Muk Wu Raw Water Pumping Station, where the Dongjiang water is received in Hong Kong and collect water samples regularly for detailed analysis to ensure that the Dongjiang water supplied to Hong Kong complies with the national standard. 東江水的平均氨氮及錳水平 Average Ammoniacal Nitrogen and Manganese Levels in Dongjiang Water 財政年度 Financial Year GB3838-2002 第II類標準值 GB3838-2002 Type II Standard Value 單位 Unit 2021-22 2022-23 2023-24 氨氮 Ammoniacal Nitrogen 毫克/公升 mg/L 0.04 0.03 0.03 ≤0.5 錳 Manganese 毫克/公升 mg/L 0.03 0.03 0.02 ≤0.1 註：以上的食水樣本是從濾水廠、海水化淡設施、配水庫、食水缸、供水接駁點及公眾可達的用戶水龍頭抽取。 Note: The above drinking water samples were taken at water treatment works, desalination plant, service reservoirs, fresh water tanks, connection points and publicly accessible consumer taps. 定期於木湖原水抽水站監測東江水水質。 Regular monitoring on the quality of Dongjiang water at the Muk Wu Raw Water Pumping Station. 66 水務署 二零二三至二四年年報 WSD Annual Report 2023/24 Enhance 提升 Menu 目錄
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