This water is used for non-potable applications, such as sanitary facilities. This water reuse is part of a set of broader measures that include reusing purified wastewater for irrigation and installing oil-water separators to treat run-off.
VINCI Construction is also developing water reuse solutions. After publishing its water plan in 2024, which covers its construction, materials and industrial activities, the Road France Division set the target to replace 100% of tap water with rainwater by 2040, at all its sites. Its action plan includes installing rainwater collection tanks and sizing software, which was developed in-house.
VINCI Construction’s Major Projects Division has pledged that by 2030, 100% of its worksites will implement solutions to reduce water use. The Fehmarnbelt Fixed Link project is emblematic of the Major Projects Division’s commitment to sustainable water management. In one year, the associated water treatment plant recycled more than 40,000 cu. meters of water.
Reut by Vinci, a project recognised at the 2024 Environment Awards, is developing a comprehensive range of resources to supply non-conventional water to worksites, thereby supporting circularity and resilience in periods of water stress. For the renovation of a section of the A62 motorway, local authorities authorised the worksite to reuse treated wastewater from the Langon-Toulenne treatment station. A mobile unit installed at the discharge end of the facility carries out additional processing of the pumped wastewater before it is directed to the worksite. A mapping tool is also under way. It will match worksites’ water needs with available sources.
By its very composition and its manufacturing process, concrete consumes significant quantities of water. VINCI is working with suppliers and partners to reduce this water footprint by overcoming the technical difficulties of replacing tap water use with that of rainwater or seawater. For its coastal area projects, Soletanche Bachy proposes the use of seawater instead of tap water to make grout. Working with its suppliers, Soletanche Bachy has demonstrated that the materials and hydraulic binders it uses are compatible with the salt concentration of seawater. In 2025, this solution was implemented for the port expansion projects at Port-la-Nouvelle in the south of France and Puerto Bolívar in Colombia. Other VINCI Construction entities, such as VINCI Construction Grands Projets and Taylor Woodrow in the United Kingdom, have installed rainwater harvesting solutions in concrete plants, generating annual water savings of more than 3 million litres.
VINCI responded to the CDP Water Security questionnaire for the 14th time in 2025 and is thus today among the 22,000 companies worldwide that take part in this disclosure initiative supported by 746 global investors. In 2025, the Group achieved a B score, thus maintaining its level of performance.
The Group’s water withdrawals, defined in paragraph 5.4.6, “Water withdrawal indicators” of the methodology note, page 293, broke down as follows in 2025:
| (in thousands of cu. metres) | Water purchased from networks | Drilled water | Dewatering water | Total withdrawals 2025 | Total withdrawals 2024 | 2025/2024 change |
|---|---|---|---|---|---|---|
| VINCI Concessions | VINCI Concessions Water purchased from networks 4,291 |
VINCI Concessions Drilled water 1,377 |
VINCI Concessions Dewatering water n/a |
VINCI Concessions Total withdrawals 2025 5,669 |
VINCI Concessions Total withdrawals 2024 5,388 |
VINCI Concessions 2025/2024 change +5% |
| VINCI Airports | VINCI Airports Water purchased from networks 3,450 |
VINCI Airports Drilled water 971 |
VINCI Airports Dewatering water n/a |
VINCI Airports Total withdrawals 2025 4,421 |
VINCI Airports Total withdrawals 2024 4,302 |
VINCI Airports 2025/2024 change +3% |
| VINCI Autoroutes | VINCI Autoroutes Water purchased from networks 803 |
VINCI Autoroutes Drilled water 185 |
VINCI Autoroutes Dewatering water n/a |
VINCI Autoroutes Total withdrawals 2025 988 |
VINCI Autoroutes Total withdrawals 2024 1,030 |
VINCI Autoroutes 2025/2024 change −4% |
| VINCI Highways | VINCI Highways Water purchased from networks 28 |
VINCI Highways Drilled water 18 |
VINCI Highways Dewatering water n/a |
VINCI Highways Total withdrawals 2025 46 |
VINCI Highways Total withdrawals 2024 17 |
VINCI Highways 2025/2024 change +171% |
| Other concessions | Other concessions Water purchased from networks 10 |
Other concessions Drilled water 203 |
Other concessions Dewatering water n/a |
Other concessions Total withdrawals 2025 214 |
Other concessions Total withdrawals 2024 36 |
Other concessions 2025/2024 change +487% |
| VINCI Construction (quarries in France) | VINCI Construction (quarries in France) Water purchased from networks n/a |
VINCI Construction (quarries in France) Drilled water n/a |
VINCI Construction (quarries in France) Dewatering water 18,545 |
VINCI Construction (quarries in France) Total withdrawals 2025 18,545 |
VINCI Construction (quarries in France) Total withdrawals 2024 25,975 |
VINCI Construction (quarries in France) 2025/2024 change −29% |
| Total | Total Water purchased from networks 4,291 |
Total Drilled water 1,377 |
Total Dewatering water 18,545 |
Total Total withdrawals 2025 24,213 |
Total Total withdrawals 2024 31,363 |
Total 2025/2024 change −23% |
The Group’s most significant water withdrawals are dewatering water from quarries, which is immediately returned into the water table or released into natural environments. The volume of dewatering water can vary significantly from year to year, depending on the amount of rainfall. The volumes of water purchased come from drinking water or industrial water networks. Drilled water is used for a range of operations, such as hosing down runways, cleaning materials and cleaning sites.
For the Concessions business, withdrawals include drinking water, industrial water, drilled water and surface water used for a range of operations, such as hosing down runways, cleaning materials and cleaning sites. These withdrawals are returned to the natural environment.
Water withdrawals fell by 23%, or 7,150 thousand cu. meters, from 2024 to 2025, mainly due to lower rainfall at quarries in France in 2025. This reduced dewatering water by 29% and withdrawals by 4% for VINCI Autoroutes. Water withdrawals by VINCI Airports rose by 3%, or 119 thousand cu. meters, in 2025 compared with 2024. This increase is mainly due to higher traffic and leaks at several airports. Smart meters installed at London Gatwick in 2024 were used to detect and repair leaks, enabling the airport to reduce withdrawals by 7% in 2025. VINCI Highways’ water withdrawals increased with the integration of four entities into the 2025 reporting scope: Via Salis, Northwest Parkway, Via Cristais and Entrevias. Water withdrawals by other concessions showed higher levels due to more reliable reporting data on stadiums in 2025.
