Septic vaults construction, excavation, and installation. Repairing of leaking as well as leaking pipes. Locating of open septic vaults. Removing of trash inside the septic vault. Declogging and clearing up of clogged pipelines and drainage system. Draining and installation of outlet and inlet pipes. Draining of water waste for flooded areas, swimming pool, etc. Preventive maintenance for establishments including canteens, fast food chains, hotel, etc. Siphoning of septic sludge from septic vault. Cleaning of grease tank. Re-piping of damaged pipelines. Installation and repair of main pipeline, outlet, inlet, lavatories and waterline.