Polisal Projects Ltd. is geared to carry out activities such as the cleaning and flushing of public sewers, sewer galleries, cleaning cesspits, opening public manholes and checking for stoppages. The company owns a fleet of large, sophisticated suction bowsers with a capacity of 10 cubic meters each. These bowsers are unique in Malta and are complete with all the necessary equipment for the cleaning of sewers. High pressure water jets are used and a system of special pipes go through the conduits to extract the material inside.

Polisal has been awarded a 5 year contract by the Malta Government for the cleaning of public sewers and galleries.