Established by the UN General Assembly, World Water Day is celebrated annually on 22 March. The Day aims to raise global awareness of the necessity to treat one of our most precious natural resources – freshwater – with care and to use it wisely.

Rosneft is aimed at the rational use of water resources as part of its activities and takes measures to protect and replenish them. At every stage of the production cycle, the Company works to ensure the responsible use of water resources. The Corporate Environmental Efficiency Programme and plans to modernise production facilities provide for a further reduction in water abstraction from natural sources, an increase in the proportion of recycled and reused water, the environmentally sound use of associated production water, and the introduction of state-of-the-art wastewater treatment systems.

The proportion of recycled and reused water within the Company exceeds 93.7% of the total volume of water used for operational purposes. ISS (Institutional Shareholder Services), a leading international investment and consulting agency, has commended Rosneft's environmental performance highly, placing the Company among the leaders in its environmental ranking. For the third consecutive year, RAEX, Russia's leading non-credit rating agency, has awarded Rosneft an “AA” ESG rating, confirming that the Company's performance in the area of sustainable development – including environmental performance – is of a very high standard.

Rosneft's subsidiaries maintain high standards of environmental safety in water management in all regions of operation.

In the oil refining and petrochemical sector, the Achinsk Refinery in the Krasnoyarsk Territory refurbished its wastewater treatment facilities in 2025 with a view to improving the efficiency of water reuse. Following the modernisation of the water supply network and cooling towers, and the automation of the cooling processes for process water, the proportion of reused water for the enterprise's production needs has risen to 95%.

Rosneft is implementing effective, environmentally friendly water treatment solutions at its production facilities. Several Rosneft enterprises in the Samara Region use phytofiltration technology in their wastewater treatment plants. The Kuibyshev Refinery was a pioneer in its implementation, using plants, such as water hyacinths (eichhornias), pancratium and sweet flag to achieve a high degree of wastewater disinfection. Eichhornia seedlings have also been successful at the Syzran and Novokuibyshevsk refineries' treatment facilities.

The Novokuybyshevsk Refinery in the Samara Region is implementing a comprehensive environmental programme, one aspect of which is the protection of water resources. Its implementation over recent years has led to a 36% improvement in wastewater quality. One of the key projects is the commissioning of an innovative water treatment unit featuring a membrane bioreactor. As a result, the enterprise was able to return the treated effluent to the recycled water supply system. The project has achieved a 97% rate of water recycling at the enterprise.

One of Rosneft’s key environmental investment projects, the biological waste treatment at the Ufa Group of Oil Refineries owned by Bashneft, has treated 185 million cubic metres of wastewater since beginning operations in 2019. Biological waste treatment complex serves not only Bashneft's refineries, but also treat wastewater from 50 enterprises in Ufa's northern industrial zone and storm water runoff. The membrane reactor technology removes all impurities and microorganisms from the wastewater. As a result, the water quality meets the standards for fishery water bodies.

The Angarsk Petrochemical Company, located in the Irkutsk Region, operates a closed-loop water supply system. The enterprise's recycling system ensures that 90% of the water is reused. The enterprise's treatment facilities also process wastewater from the town of Angarsk and from industrial enterprises.

In the oil and gas production sector of the Vankor cluster, which is located in the Yenisei River basin and that of its tributary the Bolshaya Kheta, environmentalists from RN-Vankor continuously monitor water bodies and the riparian zone near production sites. Specialists from RN-Vankor, in collaboration with accredited laboratories, carry out regular inspections of the treatment facilities and analyse the environmental conditions and the state of the biota in the water bodies. Monitoring of wastewater parameters is also conducted across a total of 23 indicators. In 2025, environmental specialists at RN-Vankor took 316 samples of wastewater and 664 samples of surface water and sediment.

Construction of a modern water treatment facility in Nyagan has commenced, supported by RN-Nyaganneftegaz. This will triple the town's water treatment capacity to 30,000 cubic metres per day, enabling the provision of high-quality drinking water that meets modern health standards to over 60,000 residents.

At the Samotlor field, an advanced system for maintaining reservoir pressure has eliminated the need to draw water from surface sources. In order to maintain reservoir pressure, injection water is utilised, having undergone treatment via gravity settling in designated tanks. This ensures that the system for maintaining reservoir pressure operates in a closed-loop process. Samotlorneftegaz also uses formation water during multi-stage hydraulic fracturing operations. The implementation of this advanced technique has already enabled the avoidance of abstracting more than 300,000 cubic metres of water.

In 2025, Orenburgneft continued to implement measures to reduce water consumption. The enterprise at the Pokrovskoye field has transitioned the injection well bank to the injection of sub-production water into the reservoir from the Pokrovskaya cluster pumping station.

Samaraneftegaz also uses water separated from the oil-bearing fluid during production in its reservoir pressure maintenance systems. This approach is both environmentally responsible and improves the efficiency of production processes at the enterprise's facilities.

RN-Northwest has fitted the rest areas at Rosneft filling stations in St. Petersburg with automated drainage systems. This has reduced water consumption and enhanced visitor comfort. Maintenance work was carried out on the treatment facilities at the Vladimirovsky country hotel complex in the Leningrad Region, resulting in an improvement in water treatment quality. An innovative drinking water supply system has been installed in the guest leisure areas at Vladimirovsky, reducing water consumption.

The Company's subsidiaries regularly organise initiatives to conserve and enhance aquatic biological resources in the regions where they operate. These include the replenishment of valuable fish species in water bodies, the organisation of environmental clean-up campaigns along the banks of rivers and lakes, the restoration of natural springs, the promotion of a culture of rational and responsible use of natural resources, and the carrying out of public awareness campaigns.

As part of a responsible waste management programme, employees at the Saratov Refinery collected 82kg of plastic bottle caps and purchased fry of herbivorous fish – common carp, silver carp and grass carp. These species of fish clean the Volgograd Reservoir of excessive vegetation, which is important for preserving its ecosystem.

One of the Company's offices in Moscow has been awarded a Green Office gold certificate in recognition of its success in reducing consumption of all types of resources, including water. Implementation of measures to improve efficiency has resulted in a 20% decrease in water consumption.

Responsible attitude towards the environment is an integral part of Rosneft Oil Company's corporate culture and one of the key principles of its business. To show its compliance with the UN Sustainable Development Goals, Rosneft is implementing a comprehensive water conservation programme that includes introduction of advanced technological solutions.

Department of Information and Advertising
Rosneft
March 23, 2026

Keywords: Environmental news 2026