## A Project Supporting **Urban Development**

As part of Zarautz's expansion, Veolia treated **21,500 m²** of contaminated soil and groundwater, making the site suitable for residential use while complying with strict environmental standards.

### Innovative Solutions **for a Lasting Impact**

- Soil and groundwater decontamination using in situ technologies
- Re-injection of treated water into the aquifer to preserve environmental balance
- Close collaboration with local authorities and construction teams



 

 

 



 

 

   ![Visual showing the city of Zarautz on the map of Spain](/sites/g/files/dvc4206/files/styles/default/public/image/2025/07/map-zarautz-espagne-604x302.png.webp?itok=85NeONBL)   





 

 

 



 

 

 

 





 

 

 

 





**21 500 m²**  
**of decontaminated soil**



 

 

 

 

 

 



 

**2**  
**in situ chemical oxidation (ISCO) campaigns**   
conducted at 88 points at depths of 10 to 12 meters



 

 

 

 

 

 



 

Installation of a groundwater treatment plant   
**with a capacity of**  
**20 m³/h**



 

 

 

 

 

 



 

 

 





 

 

   ![Icon pictogramme housing bâtiments](/sites/g/files/dvc4206/files/styles/default/public/image/2025/03/White_MULTI-FAMILY%20HOUSING%20-%20P.png.webp?itok=aG1BSN6_)   



## Key figures



 

 

 



 

 

 

 





 

 

   ![Background (Codant Veolia)](/sites/g/files/dvc4206/files/styles/crop_freeform/public/image/2025/03/background.png.webp?itok=uD4W93Mt)   





 

 

 

 

 





<a class="ck-anchor" id="telechargement">-</a>

### Discover how Veolia transforms  
**environmental challenges**   
into opportunities for urban development

[Download the full case study](/en/ecological-transformation-case-studies-full-brochure)

 



 

 

 



 

 

   ![Pictogramme icon étude de cas case studies](/sites/g/files/dvc4206/files/styles/default/public/image/2025/03/Case%20study%20-%20icon.png.webp?itok=sWYmTNRI)   





 

 

 



 

 

 

 





 

 

 

 





#### Download the full case study to learn more



 

 

 



   ![Icon pictogramme téléchargement download](/sites/g/files/dvc4206/files/styles/default/public/image/2025/03/Te%CC%81le%CC%81chargement%20libre_0.png.webp?itok=RAVn1d7f)   



**By downloading the brochure, you will have access to the full case studies, including:**

• **Specific technologies** implemented  
• Exclusive **key figures...**

Discover how Veolia can support you in the ecological transformation of your real estate portfolio through its solutions in water, energy and waste!

[Download the full brochure](/en/ecological-transformation-case-studies-full-brochure)

 



 

 

 



 

 

   ![Cover brochure - Achieving the successful ecological transformation of your buildings together](/sites/g/files/dvc4206/files/image/2025/08/Cover%20brochure%20-%20Achieving%20the%20successful%20ecological%20transformation%20of%20your%20buildings.png)   





 

 

 



 

 

 

 





 

 

   ![Ensemble de bâtiments](/sites/g/files/dvc4206/files/styles/crop_freeform/public/image/2025/03/transformation-ecologique-batiments-1084x610_0.jpg.webp?itok=6pHXY5QJ)   





 

 

 

 

 





You may also be interested in these case studies



 

 

 



 

 

 

 





 [   ![National Archaeological Museum in Reggio Calabria, Italy](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/07/italie-musee-arch%C3%A9ologique-national-320x245.jpg.webp?itok=zY-MiYYv)   



 ](/en/buildings/reggio-calabria-ensuring-clean-air-national-archaeological-museum "In Reggio Calabria") 

 Italy 

 [In Reggio Calabria](/en/buildings/reggio-calabria-ensuring-clean-air-national-archaeological-museum "In Reggio Calabria") 

 Ensuring healthy air at the National Archaeological Museum 

 

 

    

 

 

 

 

 

 [Read more](/en/buildings/reggio-calabria-ensuring-clean-air-national-archaeological-museum "Read more") 





 

 



 

 [   ![Hospital in Birmingham](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/07/birmingham-energies-decarbonees-320x245.jpg.webp?itok=xVn9HHxE)   



 ](/en/buildings/birmingham-reducing-carbon-footprint-hospital-mix-decarbonized-energy "In Birmingham") 

 United Kingdom 

 [In Birmingham](/en/buildings/birmingham-reducing-carbon-footprint-hospital-mix-decarbonized-energy "In Birmingham") 

 Reducing the Carbon Footprint of a Leading Hospital with a Mix of Decarbonized Energy 

 

 

    

 

 

 

 

 

 [Read more](/en/buildings/birmingham-reducing-carbon-footprint-hospital-mix-decarbonized-energy "Read more") 





 

 



 

 [   ![Building Materials in Rennes](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/07/rennes-materiaux-batiments-320x245.jpg.webp?itok=D0jESzAS)   



 ](/en/buildings/rennes-giving-building-materials-second-life "In Rennes") 

 France 

 [In Rennes](/en/buildings/rennes-giving-building-materials-second-life "In Rennes") 

 Giving Building Materials a Second Life 

 

 

    

 

 

 

 

 

 [Read more](/en/buildings/rennes-giving-building-materials-second-life "Read more") 





 

 



 

 [   ![Bâtiment public à Milan](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/07/milan-reduire-consommation-energetique-320x245.jpg.webp?itok=FFUbzA8V)   



 ](/en/buildings/milan-reducing-energy-consumption-public-buildings "In Milan") 

 Italy 

 [In Milan](/en/buildings/milan-reducing-energy-consumption-public-buildings "In Milan") 

 Reducing Energy Consumption in Public Buildings to Preserve Comfort and the Climate 

 

 

    

 

 

 

 

 

 [Read more](/en/buildings/milan-reducing-energy-consumption-public-buildings "Read more") 





 

 



 

 [   ![Local Decarbonized Energy in Barcelona](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/07/barcelone-energie-locale-decarbonee-320x245.jpg.webp?itok=FrDYSz0c)   



 ](/en/buidings/barcelona-transforming-residual-cold-local-decarbonized-energy "In Barcelona") 

 Spain 

 [In Barcelona](/en/buidings/barcelona-transforming-residual-cold-local-decarbonized-energy "In Barcelona") 

 Transforming Residual Cold into Local Decarbonized Energy 

 

 

    

 

 

 

 

 

 [Read more](/en/buidings/barcelona-transforming-residual-cold-local-decarbonized-energy "Read more") 





 

 



 

 [   ![Reduction of energy and water consumption in Prague](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/07/prague-reduire-consommation-energie-eau-hopital-320x245.jpg.webp?itok=DjRjS8Tp)   



 ](/en/buildings/prague-reducing-energy-water-consumption-hospital "In Prague") 

 Czech Republic 

 [In Prague](/en/buildings/prague-reducing-energy-water-consumption-hospital "In Prague") 

 Reducing Energy and Water Consumption at a Hospital 

 

 

    

 

 

 

 

 

 [Read more](/en/buildings/prague-reducing-energy-water-consumption-hospital "Read more") 





 

 



 

 [   ![Airport in Santiago, Chile](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/07/santiago-aeroport-zero-waste-to-landfill-320x245.jpg.webp?itok=fT-scKwE)   



 ](/en/buildings/santiago-aiming-zero-waste-to-landfill-airport-2050 "In Santiago") 

 Chile 

 [In Santiago](/en/buildings/santiago-aiming-zero-waste-to-landfill-airport-2050 "In Santiago") 

 Aiming for a "Zero Waste to Landfill" Airport by 2050 

 

 

    

 

 

 

 

 

 [Read more](/en/buildings/santiago-aiming-zero-waste-to-landfill-airport-2050 "Read more") 





 

 



 

 [   ![France, Performance environnementale des bâtiments](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/03/France%2C%20Performance%20environnementale%20des%20ba%CC%82timents_0.jpg.webp?itok=cXbFEWeI)   ](/en/buildings/france-improving-environmental-performance-buildings-healthier-living-environments "In France") 

 FRANCE 

 [In France](/en/buildings/france-improving-environmental-performance-buildings-healthier-living-environments "In France") 

 Improving the environmental performance of buildings and make them healthier to live in 

 

 

    

 

 

 

 

 

 [Read more](/en/buildings/france-improving-environmental-performance-buildings-healthier-living-environments "In France") 





 

 



 

 [   ![Sécurité sanitaire des hôpitaux aux USA](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/03/Se%CC%81curite%CC%81%20sanitaire%20des%20ho%CC%82pitaux%20aux%20USA.jpg.webp?itok=3qPjVHX0)   ](/en/buildings/united-states-securing-hospital-safety-through-sustainable-waste-management "In the United States") 

 UNITED STATES 

 [In the United States](/en/buildings/united-states-securing-hospital-safety-through-sustainable-waste-management "In the United States") 

 Ensuring health and safety by managing waste streams for a major children’s hospital 

 

 

    

 

 

 

 

 

 [Read more](/en/buildings/united-states-securing-hospital-safety-through-sustainable-waste-management "In the United States") 





 

 



 

 [   ![Brisbane Energie Solaire Université de Sunshine Coast](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/03/Brisbane%20-%20Energie%20Solaire.jpg.webp?itok=-iAHI4Tr)   ](/en/buildings/brisbane-australia-solar-energy-keeps-university-campus-cool "In Brisbane") 

 AUSTRALIA 

 [In Brisbane](/en/buildings/brisbane-australia-solar-energy-keeps-university-campus-cool "In Brisbane") 

 Refreshing a campus with solar energy to reduce electricity consumption and CO2 emissions 

 

 

    

 

 

 

 

 

 [Read more](/en/buildings/brisbane-australia-solar-energy-keeps-university-campus-cool "In Brisbane") 





 

 



 

 [   ![](/sites/g/files/dvc4206/files/styles/content_push_teaser/public/image/2025/03/Abu%20Dhabi%20-%20Gestion%20de%CC%81chets%20industriels%20dangereux.jpeg.webp?itok=gW-qj6ey)   ](/en/industries/processing-and-recovering-hazardous-industrial-waste-middle-easts-largest-refinery-abu-dhabi "In Abu Dhabi") 

 UNITED ARAB EMIRATES 

 [In Abu Dhabi](/en/industries/processing-and-recovering-hazardous-industrial-waste-middle-easts-largest-refinery-abu-dhabi "In Abu Dhabi") 

 Processing and enhancing the hazardous industrial waste from the largest refinery in the Middle East to assist it in its ecological transition 

 

 

    

 

 

 

 

 

 [Read more](/en/industries/processing-and-recovering-hazardous-industrial-waste-middle-easts-largest-refinery-abu-dhabi "In Abu Dhabi") 





 

 



 

 

  Previous         Next