The water sector consumes approximately 15% of Jordan's total energy consumption highlighting the need for effective energy management and efficiency measures to ensure long-term water-energy security. In surface water treatment plants, energy use is concentrated in two main areas: the energy required for the treatment process itself and the energy used for pumping water into public distribution networks. This study presents a comprehensive water-energy performance evaluation for one of the largest surface water treatment plants in Jordan located in the north of Jordan. The analysis quantifies energy consumption associated with both the treatment process and pumping water. Specific energy consumption (SEC), expressed in kWh/m³, is used as the primary performance metric to assess operational efficiency. Over a 21-month monitoring period, the analysis showed that the treatment plant had an average monthly SEC of 0.4106 kWh/m³. This value is comparable to those reported for similar facilities worldwide. To align with Jordan's national target of achieving 50% renewable energy by 2030, the study proposes a solar photovoltaic (PV) system to meet the plant's energy demand. The system is designed to fully cover the plant's consumption, enabling net-zero energy operation and positioning it as the first green-certified surface water treatment plant in Jordan. With the proposed PV system, an estimated 3270.42 tons of CO₂ emissions annually from conventional power generation could be avoided. The findings offer practical recommendations to enhance energy efficiency and advance sustainable water treatment practices in the country