非住宅用水佔全港總用水量約45%。為提升非住宅用戶的用水效益，水務署聯同環保促進會自2022年舉辦ECH2O -「商約」惜水運動，旨在為工商界創建一個協作平台，透過簽署惜水承諾、委任惜水經理、宣傳教育、改善設備及嘉許計劃等舉措，共同推動珍惜用水。
Non-domestic water use accounts for approximately 45% of the total water consumption in Hong Kong. In order to enhance water efficiency in the non-domestic sector, the Water Supplies Department and Green Council have organised the ECH2O - Enterprises Cherish Water Campaign for the commercial and industrial sectors since 2022, which creates a collaboration platform for organisations to cherish water together through different initiatives including signing of charter, appointment of cherishing water manager, education & promotion, equipment improvement and recognition programmes, etc.
