水務署2020/21年年報 WSD Annual Report 2020/21

Total Water Management 全 面 水 資 源 管 理 新一份東江水供水協議已於二零二零年 十二月簽訂，由二零二一年至二零二三年 為期三年。新協議把以往採用的「統包 總額」方式優化為「統包扣減」，按實際 東江水取水量而扣減水價，並沿用統包 方式，訂明每年供水量上限，確保香港擁 有穩定而靈活的東江水供應，滿足香港的 實際需要。 新協議已加入扣減水價的機制，每年按 供水量上限扣除一筆款項(透過單位價格 乘以供水量上限與實際供水量的差額) 得出該年的實際水價。「統包扣減」方式 回應了巿民就東江水供水按量收費的 訴求，並至少可應用至二零二九年。按 二零二一年價格計算，在新協議的機制 下，估計在這九年期內最高節省金額可達 3.24 億港元。 新協議內的每年基本水價調整增幅為每年 1 . 3 3 % ，反映粵港兩地相關消費物價 指數和人民幣兌港元匯率的變動。鑑於 二零一九冠狀病毒病疫情對香港經濟環境 帶來的挑戰，粵方同意將二零二一年的 實 際水價凍結在二零二零年水平 ( 即 48.21 億港元)，而非 4 8 . 8 6 億港元，以 紓緩香港的財政負擔。二零二一年， 香港在東江水方面的支出預計為 48.21 億 港元，而二零一九年和二零二零年的支出 分別為 48.07 億港元和 48.21 億港元。 沖廁用海水 一九五零年代末，香港引入海水沖廁， 至今仍是全球少數廣泛應用這種可持續 資源沖廁的地方之一，在我們的水資源 管理中發揮著舉足輕重的作用。目前， 我們的海水供應網絡覆蓋全港約 85% 的 人口，每年供應約 3 億立方米海水，節 省了同等分量的食水，約佔總供水量的 24% 。 A new agreement on the supply of Dongjiang water to Hong Kong for a three-year period from 2021 to 2023 was signed in December 2020. The previously adopted “package deal lump sum” approach is enhanced to a “package deal deductible sum” approach in which the water price will be deducted according to the actual amount of Dongjiang water supplied. The continual adoption of a package deal approach to stipulate an annual supply ceiling can guarantee Hong Kong a stable yet flexible supply of Dongjiang water to meet the city's actual needs. The new agreement has introduced a water price deduction mechanism under which the annual ceiling water price will be subject to the deduction of a sum (by multiplying a unit rate to the difference between the annual supply ceiling and the actual amount of water supplied) to arrive at the annual actual water price. This “package deal deductible sum” approach has addressed the requests by the public for payment based on the quantity of Dongjiang water supplied and will be maintained at least up to 2029. It is estimated that under the mechanism in the new agreement, based on the 2021 price level, the maximum saving within this nine-year period will be HK$324 million. The annual ceiling water prices in the new agreement will be increased by 1.33% each year, which generally reflects the changes of the relevant consumer price indices of Guangdong and Hong Kong and the exchange rate between the Renminbi and the Hong Kong dollar. In view of the prevailing challenging economic environment arising from the COVID-19 epidemic, Guangdong authorities have agreed that instead of HK$4,886 million, the actual water price for 2021 is to be frozen at the 2020 level (i.e. HK$4,821 million) to ease the financial burden of Hong Kong. In 2021, Hong Kong’s expenditure on Dongjiang water will be HK$4,821 million, compared to HK$4,807 million and HK$4,821 million paid in 2019 and 2020 respectively. Salt Water for Flushing In the late 1950s, salt water was introduced in Hong Kong for toilet flushing. Hong Kong is one of the few places in the world extensively applying this sustainable resource which forms an important role of our water management. Currently, our salt water supply network covers about 85% of the Hong Kong population. About 300 million m 3 of seawater is supplied per annum, conserving an equivalent amount of fresh water which is about 24% of the total water supply. WSD Annual Report 2020/21 23