This article highlights a case study in enabling Jordanian schools to become active agents of adaptation against water scarcity. It aims to demonstrate integrated water resources management at schools with adequate functional sustainability. This case study seeks to answer the question, are Jordanian public schools able to functionally sustain improved water and sanitation? The methodology consists of a twofold process: 1) adapting locally built, innovative, and functionally sustainable technologies; and 2) ensuring local development and local management. It finds that greywater/wastewater treatment, alongside improved reuse facilities and services, can be sustained and functional as long as it achieves effective school water demand, is powered with renewable energy, and is accompanied by a clear coordination, operation, and maintenance framework. Such intervention can reduce freshwater use and energy costs to approximately 30 per cent and 90 per cent respectively.