Civil engineering
Sanitation in Douala
Collection, treatment and discharge of wastewater, drainage networks and infiltration works for local authorities and construction sites across the Littoral.
Sanitation protects construction sites, roads and neighbourhoods from standing water. STIS handles the full chain — from wastewater collection through treatment to discharge — as well as the drainage networks and infiltration works that carry stormwater away.
Wastewater treatment follows three stages that we manage end to end: collection, treatment — cleaning the water before it returns to the natural environment — and discharge. We size each structure to the ground conditions and the volume to be treated.
For stormwater, we build drainage networks and infiltration works, including permeable surfaces that let water soak back into the ground. Culverts, gutters and drainage structures fall within our civil engineering experience, serving local authorities and private construction sites alike.
Command of the full chain: collection, treatment, discharge
Civil engineering experience: culverts, drainage, engineering structures
Cameroonian company established since 2011
Frequently asked questions
What are the stages of wastewater treatment?
Treatment follows three stages: collecting the wastewater, treating it — cleaning it before discharge — then discharging it into the natural environment. STIS carries out the full chain and sizes the structures to your site.
Do you carry out drainage works and culverts?
Yes. We build the drainage networks, gutters and culverts that carry stormwater away and protect roads and construction sites. It is a skill we share with our civil engineering activity.
Do you work for local authorities and public contracts?
Yes. Our sanitation and drainage works serve local authorities as well as private construction sites in Douala and across the Littoral. Get in touch with the details of your project for a quote.
Related services
Construction & civil engineering
From buildings to civil engineering structures, STIS designs and builds your project — from the technical study through to handover.
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Excavation, grading and backfilling carried out with our own equipment fleet, on your site in Douala and across the Littoral.
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