Monitoring Water use monitoring and measurement We actively monitor water usage across our value chain by leveraging online monitoring systems to track consumption from each source as part of our sustainable water management. A comprehensive water balance is maintained at our operations, providing a clearer understanding of water inputs, reuse and discharge volumes. This approach enables us to further optimize efficiency, reduce waste and enhance water conservation efforts. We continually monitor seawater withdrawal levels and parameters. Additionally, we monitor groundwater resources to understand recharge rates and provide for their long-term availability for the benefit of current and future local water users. Wastewater monitoring and measurement Our wastewater effluent management program is designed to safeguard the environment and public health by aligning with relevant environmental regulations24 and internal corporate standards. Approximately 90% of our water disposal comprises of seawater used in closed-loop cooling systems, discharged safely after cooling with no chemical treatment required. Other wastewater streams include produced water, process wastewater, brine reject, flowback water and domestic wastewater. Streams undergo primary, secondary or tertiary treatment to meet regulatory discharge limits. We maintain ongoing monitoring of discharge quality and endeavor to implement corrective actions where needed. In 2024, no incidents of non- compliance with discharge limits were recorded. ADNOC reports wastewater quality trends to regulatory authorities and has a robust spill prevention and response framework in place to reduce risks and enable rapid containment25. ADNOC regularly monitors ambient groundwater and marine water conditions against baseline levels to support the effectiveness of its control measures and ongoing improvement of wastewater management practices. This monitoring includes groundwater wells, soil quality, marine water and sediment quality surveys, as well as interstitial liner monitoring. ADNOC Onshore: Transforming produced water management ADNOC’s Bu Hasa and Asab oil fields utilize Produced Water Reinjection (PWRI) technology to enhance oil recovery and manage water resources sustainably. In both fields, produced water, extracted alongside oil, is treated and reinjected into reservoirs to maintain pressure, improving oil recovery efficiency. This process reduces environmental impact by reducing the disposal of water into the sea. PWRI technology supports ADNOC’s sustainable water management efforts by helping to optimize water use, driving a reduced environmental footprint, and supporting long- term production. 24 In Abu Dhabi, wastewater is regulated by the Abu Dhabi Department of Energy. All marine vessels comply with the requirements of the International Maritime Organization (IMO). Discharges to the marine environment are regulated under the Federal Law No (24) of 1999 for the Protection and Development of the Environment. Ambient marine water and sediments and soil quality are regulated under the Abu Dhabi Specification Guideline. 25 For more details on our spill prevention and response measures, please refer to the ‘Spill prevention’ section in this chapter. 84