In private homes or facilities located in areas where there is no municipal sanitation installed, they use tanks called prefabricated septic tanks (formerly black wells) whose function is to collect the wastewater generated in housing-facilities, separating the water from solid substances . 

When the well-pits are filled, our job is to empty the contained waste up to the truck's sludge tank, with pressure water from the interior surface and subsequent transfer of the waste to the municipal sewage treatment plant.


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