39,590 3,465 75,242 56,583 9,339 3 91,696 460 3,878 WATER GRI 3-3, 303-2 to 303–5 Policies, Procedures, and Practices Water is essential to our operations, and e!ective wastewater management is important to protect public health and the environment. We manage wastewater quality by complying with local regulatory requirements and applying good water and wastewater management practices to minimise impacts on local water resources and surrounding communities. To ensure consistent implementation, we have established water quality guidelines across our operations and contractor activities, including: • Mine Waste Emergency Management (INK-HSE001-SDJ, INKHSE-001-TBR) • Wastewater Sampling Method (SOP-037-HSE-2022) • Domestic Wastewater Treatment Plant Guidelines (24/SOPSHE/III/2020) • Kuriflock Usage Manual (41/SOP-SHE/II/2022) • Mine Water Liquid Waste Management Procedure (SOP-014HSE-2018) • BUMA Management System for water quality standards Water Sources and Usage Water for our operations is primarily sourced from groundwater through boreholes and from municipal supplies provided by vendors for domestic use. At certain mines, surface water is also used to meet clean water requirements. In 2025, water withdrawal from harvested rainwater is added to better reflect operational reality. This is categorised as surface water, following the GRI standard, and is used in water trucks for dust suppression. Greywater from sanitary facilities is treated in settling ponds prior to discharge. E#uent water is monitored on a daily and monthly basis to ensure compliance with local water quality standards. Where required, treatment processes are applied to meet applicable regulatory requirements, including: • Minister of Environment and Forestry Decree No. 68-2016 • Decree of the Minister of State for the Environment No. 113 of 2003 • South Kalimantan Governor Regulation No. 036 of 2008 Municipal Water Supplies / Other Water Sources Groundwater Surface Water Total Water Withdrawal (m3) Total Water Discharge (m3) 2023 2024 2025 57,941 846 152,228 2023 2024 2025 102, 269 28 GEO ENERGY | SUSTAINABILITY REPORT 2025
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