「策略2019」亦更新了至二零二四年用水需求和供應的推算方 法及預測。根據政府統計處的預期人口增長情景，並考慮氣候 變化導致每年雨量減少，在實施用水需求管理措施的前提下， 每年食水需求量將減至9.9 億立方米，目前的食水供應將能應 付二零四零年的預測用水需求。 The 2019 Strategy Review also updated the forecast of water demand and supply methodologies and projections up to 2040. Under the expected population growth scenario provided by the Census and Statistics Department and taken into consideration the annual rainfall reduction due to climate change, the current fresh water supply arrangements will be able to meet the forecast demand up to 2040, provided that the demand management measures are implemented to reduce the annual fresh water demand to 990 million m3. 至二零四零年之全年食水需求推算 Annual Fresh Water Demand Projection by 2040 1 110 百萬立方米 million m3 990 百萬立方米 million m3 沒有用水需求管理措施的情況下： Without demand management measures: 實施用水需求管理措施的情況下： With demand management measures: 持續監測和檢討 我們修訂「全面水資源管理策略」時，不僅以應變能力、經濟 因素及可持續性等多項準則作為基礎來評估用水需求和供水 管理方案，同時亦參考水務諮詢委員會和其他持份者的意見。 為確保我們能夠應對比預期更嚴峻的情況，我們制定了一系列 後備方案。其中包括興建更多海水化淡設施、擴大水塘容量和 集水區、重啟已停用的濾水廠，以及增加東江水供應。若未來 情況與目前的估算有偏差，我們可以按需要執行合適的後備 方案。 Continuous Monitoring and Review The Total Water Management Strategy was updated taking into account the evaluation of water demand and water supply management options based on the multiple criteria of resilience, economics and sustainability, as well as the views from the Advisory Committee on Water Supplies and other stakeholders. To ensure our ability to adapt to the worse-than-expected scenarios, a host of backup measures have been formulated. These include building up more desalination capacities, expanding our reservoir capacity and catchment, reactivating mothballed water treatment works and increasing Dongjiang water supply. If the future conditions deviate from our present projections, we can implement appropriate backup measures as necessary. 現新 Innovate 水務署 二零二一至二二年年報 WSD Annual Report 2021/22 18
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