In many regions, industry is permitted to connect up to the domestic sewage system to discharge its toxic waste.

We have many slaughterhouses and meat processing plants that discharge effluent into domestic sewage systems in our major towns.

Also belonging to this field is the cleaning of obstructed soil pipes of domestic sewage systems that is done by means of a rotating, flexible shaft.

Lacking a domestic sewage system until recently, the community of Sete Cidades contributed to gradual pressures on the ecosystem, resulting in an over-abundant development of rooted aquatic macrophytes and algae in the water bodies.