Europe’s push to secure domestic supplies of lithium, copper, nickel, cobalt, graphite, tungsten, gallium and rare earth elements for batteries, defence systems, electricity grids and semiconductors is increasingly colliding with regional water scarcity, according to analysis of emerging mining developments and EU strategic project designations.
The expansion of mining projects designated under the EU Critical Raw Materials Act is now being tested against long-term hydrological stress in several member states, particularly in southern Europe, where drought patterns and groundwater pressure are intensifying.
Mapping shows exposure of strategic projects to drought conditions
New mapping reported in June 2026 by Watershed Investigations indicates that more than half of the 33 planned or expanded strategic mines identified under the EU framework are located in regions that have experienced long-term drying trends over the past two decades.
Nearly half of these projects were situated in areas affected by drought conditions in the previous three months, while approximately one quarter were located in officially classified water-stressed zones. The most exposed jurisdictions include Spain, Portugal and Greece, all of which are among the EU member states most affected by recurring water scarcity.
The EU has designated 47 strategic projects across 13 member states, covering extraction, processing, recycling and substitution capacity. These projects are intended to reduce dependence on imported critical materials, particularly from China.
EU water stress data highlights structural regional constraints
European Environment Agency data show that water scarcity affected 28% of EU territory and 32% of the population in 2023, at least during one seasonal period. On average, about 30% of EU land area and 33% of the population experience water stress each year.
Southern Europe remains the most exposed region, with approximately 30% of the population living in permanently water-stressed areas and up to 70% exposed to seasonal summer shortages. Countries most affected include Greece, Portugal, Italy and Spain, where water pressure peaks during spring and summer cycles.
Portugal lithium project highlights permitting and water conflict
In northern Portugal, Savannah Resources’ Barroso Lithium Project represents one of the most advanced EU lithium developments under strategic classification.
The project hosts a JORC-compliant resource of 39 million tonnes at 1.05% Li₂O, containing 411,900 tonnes of Li₂O, equivalent to approximately 1.019 million tonnes of lithium carbonate equivalent (LCE). The asset is located near Boticas and within 300 kilometres of five Atlantic deep-water ports. The project is designed for 100% renewable energy supply during operations.
Barroso has become a focal point of environmental and land-use opposition. Local group Unidos em Defesa de Covas do Barroso and environmental organisations have challenged its designation as a strategic EU project, citing concerns related to land use, water resources, waste handling and community rights. The region is classified as an agricultural heritage landscape.
The Portuguese government has allocated a €110 million grant to support development. The permitting process includes environmental assessment work and water infrastructure planning coordinated with Laboratório Nacional de Engenharia Civil, Portugal’s national engineering laboratory advising regulators. The project is currently advancing through the RECAPE environmental compliance framework, with detailed water infrastructure design forming a central component of permitting documentation.
Spain lithium and copper pipeline concentrated in water-stressed regions
Spain contains multiple strategic mining developments located in areas identified as highly water-stressed. Mapping cited in June 2026 identifies six strategic mining projects in such regions.
One of the largest is the San José Lithium Project in Extremadura near Cáceres, developed by Extremadura New Energies, in which Infinity Metals holds 75% and Valoriza Minería (Sacyr subsidiary) holds 25%. A 2023 scoping study outlines average production of approximately 33,274 tonnes per year of lithium hydroxide monohydrate over a 26-year mine life. The study estimates total ore extraction of 47.7 million tonnes, pre-production capital expenditure of €1.192 billion (excluding contingencies) and €1.430 billion (including contingencies).
The study also reports a post-tax net present value of approximately €2.657 billion and a post-tax IRR of 21.3%, under assumed conditions. Operating costs are estimated at US$5,723 per tonne of lithium hydroxide monohydrate, after by-product credits.
The project is being redesigned from earlier open-pit concepts toward an underground mining configuration, incorporating paste backfill and dry-stack tailings systems. Excess water from tailings filtration is planned for reuse in mine and processing circuits.
Water governance becomes a permitting and legitimacy issue
Across Iberian projects, water risk is emerging as both a technical engineering issue and a political constraint. In Spain, project acceptance is closely linked to concerns over drinking water availability, agricultural demand, tourism and protected landscapes.
The regulatory environment creates additional sensitivity, as EU-level designation of mining projects as strategic assets has increased local scrutiny in several regions. This has created tension between European industrial policy objectives and regional environmental governance.
Greece Skouries copper-gold project highlights water-sensitive metallurgy
In northern Greece, the Skouries copper-gold project in Halkidiki, operated by Hellas Gold (Eldorado Gold subsidiary), is approaching production. As of 31 March 2026, project completion stood at approximately 94%, with first production of copper-gold concentrate expected in Q3 2026 and commercial production in Q4 2026.
The project has an estimated initial mine life of 20 years, with projected average annual output of 67 million pounds of copper and 140,000 ounces of gold.
Phase 2 capital expenditure has been updated to approximately US$1.315 billion, with US$1.116 billion already invested by Q1 2026. The project is financed through a €680.4 million term facility (fully drawn) and includes a €60 million undrawn contingency facility. More than 2.8 million tonnes of ore stockpiles have been built ahead of production. Skouries incorporates filtered tailings technology to reduce water content in mine residues, improving material stability and reducing water retention in tailings storage systems.
Finland project illustrates groundwater and ecological water constraints
In northern Finland, the Sakatti copper-nickel-cobalt-platinum group metals project, operated by Anglo American, received EU strategic project designation in March 2025.
The project is partially located beneath the Viiankiaapa mire, within the Natura 2000 protected network. The planned underground mine footprint covers approximately 49.71 hectares, or about 1% of the 6,595-hectare protected area. Development plans include an underground ore transport system exceeding five kilometres, high water recycling rates and extensive backfilling of mined voids using tailings and waste rock.
Baseline hydrological monitoring and groundwater studies have been conducted since 2009, reflecting long-term water system analysis requirements for projects in protected catchments.
EU regulatory review of water framework intensifies mining debate
The European Commission initiated a targeted review of the Water Framework Directive in December 2025 under the RESourceEU Action Plan, with stakeholder consultation conducted between 17 March and 14 April 2026.
The review aims to address permitting delays and regulatory bottlenecks while maintaining environmental and public health standards, including protections for rivers, wetlands and aquifers. The directive’s interpretation remains central to permitting certainty for mining projects across Europe, particularly in water-sensitive jurisdictions.
Water systems become central to project finance and design
Mining operations across Europe require water for ore processing, dust control, tailings management, dewatering, slurry transport and site rehabilitation. Modern operations increasingly rely on water recycling systems, dry-stack tailings, underground backfilling and groundwater monitoring technologies.
Even advanced systems require external water inputs, discharge permissions and contingency planning, making water balance modelling a core component of feasibility and financing processes.
In southern Europe, projects are increasingly required to incorporate dry-year water scenarios, closed-loop processing systems, aquifer impact assessments, and long-term closure water planning as part of permitting submissions.
Financial and permitting exposure linked to water constraints
Water-related constraints are increasingly affecting project timelines, insurance conditions, permitting outcomes and capital access. Delays of 12 months or more on large mining and processing projects can materially affect net present value through financing costs, construction disruption and contract timing impacts.
Institutional lenders, export credit agencies and public funding bodies are placing greater emphasis on water risk disclosure and monitoring frameworks as part of critical minerals financing due diligence.
Regional divergence in water-related mining risk
Water risk in Europe varies significantly by geography. In Iberia and Greece, it is primarily associated with drought conditions, agricultural demand and aquifer depletion. In Finland, risks are linked to groundwater systems, wetlands, and protected ecological zones within cold-climate hydrology.
Across all regions, water availability and management capacity are emerging as key determinants of whether projects with strategic EU designation can progress to construction and operation.
Permitting outcomes increasingly tied to water resilience design
Mining projects are increasingly assessed on integrated water management frameworks, including recycling rates, discharge quality controls, groundwater modelling, emergency storage capacity, third-party monitoring systems and closure-phase water obligations.
Dry-stack tailings systems, closed-loop circuits, desalination or reclaimed water use, and aquifer reinjection are becoming standard components of feasibility-level engineering across European critical minerals developments.
The divergence between projects is increasingly defined by water system design rather than resource size alone, with water resilience emerging as a key factor in determining whether strategic mining projects can achieve financing, permitting approval and long-term operational stability.
