Every day, each one of us uses a significant amount of water. But what happens to our wastewater, how is it treated, and where does it go at the end of the circuit?

The Ginestous Garonne wastewater plant gives you the opportunity to explore and understand the treatment process.

Tariffs and conditions

FREE of charge

Practical Information

• Prior reservation is required
• Proof of identity is required on the day of the visit
• These visits are for groups only
• Photos and video are forbidden during the visit
• Visit suitable for persons of reduced mobility
• Duration: 1h30
• Open Monday to Friday, except public holidays

During the installation of the methanation facility, visits may exceptionally be modified or cancelled (with notice of at least 3 to 4 days).

More information :

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Situated in the Sept Deniers district of Toulouse, this plant processes and treats the wastewater of the inhabitants of Toulouse and more than ten surrounding towns and villages, before returning the waters to the river Garonne downstream from the bridge in Blagnac.

After identity control at the gate, you will cross the site that covers 19 hectares to take a seat in the showroom where all of the basic principles of wastewater management will be explained to you.

A selection of media (video, animated diagrams, 3D views, information panels) adapted to all audiences will allow you to understand how the different steps in the process are carried out:

Wastewater treatment and their restitution into the natural environment, processing and recovering the sludge that is created by wastewater treatment and different deodorisation systems. Since its inception in 1954, the plant has seen constant evolution in order to remain at the forefront of technical innovation and ahead of environmental standards. The site has increased its capacity several times to keep up with the expanding population of the city and to accept wastewater from new districts without compromising its eco-efficiency. The site qualifies for an ISO 14001 certification, meaning that the operator’s approach is always committed to protecting and improving the quality of the environment:

landscaping, the installation of beehives, grazing areas for flocks of sheep, the utilisation of bicycles and electric vehicles for employee mobility across a site of 19 hectares. If you are concerned about the environment, our guide will explain how drinking water is produced, the water cycle, citizen behaviour, and how to reduce water consumption. Equipped with your high-visibility vest, you will then get to explore part of the facility. The control room where the plant employees keep watch and operate the site’s facilities.
The laboratory where samples of water and sludge taken at each stage of the process are analysed by lab technicians. This self-monitoring process allows the treatment to be constantly adapted to ensure the quality of the plant’s output.
The lamella settling tanks: where primary sludge is separated from the clarified water (that overflows into the output).
The grit and oil removers: oil is removed by floatation, sand and grit is removed by settling.
Finally, deodorisation towers allowing foul air to be treated. Molecules are solubilised and clean air is released into the atmosphere.
Depending on the profile of school groups, the visit may include access to a walkway that gives a panoramic view of the site and a closer view of the sludge processing facilities.

The visit also includes an explanation of the methanation facility, currently under construction.

Other parts of the site may be accessible, depending on the profile of the group.