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Water management

Water is an essential resource for life, and we are therefore committed to using it efficiently, preventing risks, and minimizing impacts. As such, we sustainably manage water with the aim of seeking out new solutions at the operational level to minimize consumption, use it responsibly, and preserve the quality of the receiving bodies.

CEO Water Mandate logo

We bolstered our commitment to address global water challenges by joining the CEO Water Mandate. This is an initiative led by the United Nations Global Compact in collaboration with the Pacific Institute concerning water, sanitation, and the Sustainable Development Goals.

Thus, we are showing our corporate effort and responsibility towards progress and continuous improvement in these six core areas of water stewardship:

  1. Direct operations
  2. Supply chain and watershed management
  3. Collective action
  4. Public policy
  5. Community engagement
  6. Transparency
Water management chart

We use the Repsol Water Tool (RWT) to assess the risks associated with water. This includes both internal risks (measurement quality, types of water use, treatment technologies, etc.) and external risks (availability, quality, and ecosystems that are withdrawal sources or discharge receiving bodies, future water availability, regulatory and business risks, etc.). This tool enables us to identify businesses and facilities where a greater management effort must be made and the needs for action that are a priority.

Our goals

Although the industrial transformation process will require an increase in our water needs, through the Water Zero project, in the industrial complexes on the iberian peninsula we are committed to:

By 2030

not to increase freshwater withdrawal*​

By 2035

reduce freshwater withdrawal by 30%*

By 2050

achieve the ambition of net zero freshwater withdrawal*

* Compared to 2022 baseline

At the Marcellus (U.S.) Exploration and Production asset, we are committed to:

By 2030

to increase water reuse by up to 10%*, achieving a 5%* by 2026

By 2035

regenerate the natural capital of the ecosystem in this environment, reaching the ambition of net zero freshwater withdrawal*

* Compared to 2022 baseline and planning

Water indicators

The following infographic reflects how Repsol manages water in accordance with the reporting requirements established by the Global Reporting Initiative (GRI) Standard, in particular, GRI 303: Water and effluents, within the 300 series (environmental issues). The aim is to facilitate public access to annual data and to communicate in a transparent manner what are the significant impacts on water and how these are managed.

Annual data 2024

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In all areas In areas of high-water stress 16.216 11.460 1.568 7.403 Water consumption Repsol - Water withdrawal by business Repsol - Water withdrawal by region Freshwater* 68% 21% Withdrawal Withdrawals Water interaction Operation Effluents Discharge Disposal In all areas In all areas In areas of high-water stress In areas of high-water stress Non freshwater** Groundwater Produced water from owned operations Produced water from third parties In 2024, in compliance with the Corporate Sustainability Reporting Directive (CSRD), we have identified and assessed the material water-related impacts, risks and opportunities (IRO) of our own operations, reporting the targets set for the reduction of freshwater withdrawal from the environment and the main actions taken to achieve them, as well as metrics for water consumption, reuse, recycling and storage. <1% <1% 1% 49% 49% GRI303-3 GRI11.6.5 CSRDESRS E3​ GRI303-1 GRI303-5 4.624 17.366 116 Deep well injection 8.772 1.351 Third Party - Effluent reuse 2.790 Seawater 238.505 31.762 47.978 231.668 243.129 15.918 17.486 942 8.345 Surface water 10.629 677 Freshwater* 6% 94% Tipo de agua Freshwater* Non freshwater** Produced water** All types of water Legend Areas without water stress Areas of high-water stress*** Water stress not applicable Water volume data in thousand m3. Areas of high-water stress are considered water risk areas. They correspond to those locations where the water stress indicator according to the Aqueduct Water Risk Atlas (WRI) is high or extremely high. *** Areas of high-water stress: Applies only to those areas where activities are located for which water has been identified as a material topic. ** Non freshwater: Total Dissolved Solids > 1000 mg/l, including produced water. * Freshwater: Total Dissolved Solids <= 1000 mg/l Water discharge Water withdrawal GRI303-4 GRI303-2 CSRDESRS E3​ CSRDESRS E3​ CSRDESRS E2​ Third-party 32.592 Surface water 12.138 Recycled and reused water 17.538 19 1.894 Total water recycled 19.451 2.571 3 260 Total water reused 2.833 24.326 39.633 30.821 8.345 942 240.188 17.268 243.129 17.481 4.624 238.505 17.366 116 8.266 12.138 10.432 270 15.766 14.760 961 1.351 230.854 1.521 746 196 197 598 2.571 79 291 8.772 2.790 311 253 Effluent treatment No treatment Primary Secondary Hydrocarbon COD Suspended solids Tertiary 350 ton 2.645 ton 586 ton Pollutants 270 197 Seawater 15.766 14.760 230.854 Third-party 2.267 961 291 2.571 CSRDESRS E3​ CSRDESRS E3​ Total water stored Changes in storage 476 225 Water stored 1% 46% 31% 22% Land 311 253 3% 4% 5% Refining Chemical Exploration & Production Low Carbon Client & others Rest of the world Spain i i i i i i i i i i i i i i i i i

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A collaborative approach

Water management should follow an approach that builds joint relationships between stakeholders and regulators for more effective management strategies that prevent risks and mitigate impacts.

Public advisory panel meeting

At Repsol, we open channels of communication between society and the Company, such as the Public Advisory Panel for the different industrial complexes, through which the concerns of local residents about safety, health, and the environment, including water, can be heard and conveyed.

Eagle Ford plant in Texas, USA

The water treatment and reuse project at our Eagle Ford asset, in South Texas, has been recognized in the Environmental Management category by the South Texas Energy & Economic Roundtable (STEER) and Texas Oil & Gas Association (TXOGA) at the 12th Annual Eagle Ford Excellence Awards.

This is a mobile water treatment facility for reuse, which has reduced truck traffic and the need for water disposal, as well as minimized reliance on groundwater resources. The water undergoes a chemical and mechanical treatment process removing visible hydrocarbons, iron and stabilizing pH levels to the optimum quality needed to be used again for subsequent activities.

Between August 2023 and May 2024, Repsol treated more than 657,000 barrels of water.

La Pampilla Refinery, Peru

La Pampilla refinery has obtained the independent Verification Declaration of its water footprint, according to the requirements of the ISO 14046 standard.

The water footprint assessment conducted in accordance with this standard:

  • Is based on the life cycle analysis
  • Identifies potential water-related environmental impacts
  • Includes geographic and temporal dimensions
  • Identifies the amount of water consumption and changes in water quality
  • Uses hydrology knowledge

This milestone marks a starting point in the verifiable measurement of the Water Footprint and will allow the deployment of actions for the improvement and sustainable management of the water resource.

Water treatment plant

At the Tarragona Industrial Complex, we use regenerated water from the municipal wastewater treatment plant (WWTP), which reduces the amount of water withdrawn from the environment. Under normal operating conditions, more than 10% of the total flow of water withdrawn comes from the municipal WWTP.

Cartagena refinery

The water use efficiency at the Cartagena Refinery makes us a European leader in the sector, with a water consumption ratio 26% lower than the average for other refineries. 

Such great results, which are based on data from the European organization of oil companies for the protection of the environment and health (Concawe), have been achieved thanks to the implementation of specific measures included in the water plan of the industrial complex.

Technicians at Repsol's Technology Lab

At the Technology Lab water treatment technologies are evaluated to minimize the environmental impact of the effluents from our activities, determined by the presence of certain substances.

In the case of nitrogen content removal, moving bed biofilm reactor technologies (MBBR) improve on traditional technologies, reducing operating costs and space requirements for treatment, and improving discharge quality. This technology has been validated by the TechLab team at laboratory scale with successful results in its application to the particularities of the water streams of our operations.

To further improve the process, these tests have validated the use of another internal waste stream to perform this nitrogen removal operation, avoiding the consumption of commercial chemicals and thus creating a more efficient process.

Puertollano Refinery

We have implemented a technological solution for water treatment through clarification with micro-sand filters. In this way, we managed to increase the water recirculation ratio of the refinery itself and minimize the collection and dependence on water from the environment. We also managed to improve the quality of the water discharged into the Ojailén river.

Margarita plant aerial view

We built a new water treatment plant at our Margarita gas production field in order to be able to have the technology to treat the water and achieve the quality specifications for the injection process in the event of a sudden increase in the volumes of formation water produced.

Marcellus Shale in the United States

We are committed to a responsible and sustainable water management strategy that includes:

  • Risk analysis before choosing the location of gas wells to protect groundwater resources before, during, and after drilling
  • Recycling of produced water for reuse in the development of new wells
  • Safe water storage
  • Encouraging the transport of water by pipelines instead of trucks

We establish an ongoing dialogue with communities, landowners, and regulators to address concerns and share our water management plans.

View of the Camisea facilities

Acknowledgement awarded by the National Water Authority (ANA), which has been obtained thanks to the measurement, reporting, and reduction of the water footprint and the development of a shared value project with the communities. Thanks to this project, the ecological and participatory restoration of exploratory platforms was carried out, which managed to recover the ecological integrity of the forest, essential for the conservation of local water resources.

A worker looking through a pair of binoculars

As an example of a detailed study of the water supply sources in the areas where we operate, the Hydrogeological Analysis of the Margarita-Huacaya Field was conducted. This study assessed the underground water resources in the area including their availability and evolution, while analyzing fluctuation and weather dependency and checking the sustainability of the system. 

The results allowed us to see how the aquifers in the area worked, control the available resources, assess the impact of extractions on underground water, and optimize the distribution of the sources in an environmentally sustainable way.