1058 2. SUMMARY OF DEVELOPMENT OF WATER MANAGEMENT CONCEPTS AND TRENDS (2004-2025) 2.1 Evolution from End-of-Pipe to Integrated Systems The past two decades have witnessed a fundamental shift in mining water management philosophy. Traditional approaches focused primarily on treating contaminated water at the point of discharge‚ the socalled "end-of-pipe" treatment. This paradigm has evolved toward integrated water management systems that emphasize prevention, reuse, and circular economy principles [1]. Table 1 shows the evolution of water management paradigms in the last 20 years. Table 1 – Evolution of Water Management Paradigms in Mining (2004-2025) Period Dominant Approach Key Characteristics Representative Technologies Primary Drivers Adoption Rate Percent 20042010 End of pipe treatment Reactive, compliance-focused, single-point discharge treatment Conventional treatment plants, settling ponds, lime neutralization Clean Water Act compliance, basic environmental regulations 85-95 20112015 Water efficiency focus Operational optimization, water balance modeling, cost reduction Water balance modeling, recycling systems, process optimization Water scarcity concerns, operational cost pressures 60-75 20162020 Integrated manageme nt Holistic, lifecycle approach, multistakeholder engagement MAR, zero liquid discharge, digital monitoring, stakeholder engagement UN SDGs, corporate sustainability reporting, social license 40-60 20212025 Circular economy Resource recovery, sustainability integration, digital transformation AI-driven systems, resource extraction from waste, IoT monitoring Climate commitments, circular economy policies, Industry 4.0 25-45 Source: Compiled from literature analysis; ICMM (2012, 2017, 2020) 2.2 Most Relevant Advances in Water Management 2.2.1 Managed Aquifer Recharge (MAR) One of the most significant advances has been the adoption of Managed Aquifer Recharge (MAR) systems in mining operations. A comprehensive global review identified 27 mines currently using or considering MAR implementation. A substantial increase from minimal adoption in 2004 [3] and a significant shift from traditional water disposal practices to strategic water storage and management approaches. Figure 1 shows the global distribution of MAR sites and MAR implementation by method.
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