Plumbing is the work of connecting and repairing things such as water and drainage pipes, baths, and toilets. The water connections are made using CPVC pipes. Sewage connections are done in the flooring of the bathrooms for human waste and utility/kitchen areas for waste water. PVC pipes of 2 inch, 4inch or 6 inch thickness are used for sewage purpose. The ends of the pipes are fitted with traps if on the ground. A plumbing system consists of three parts: an adequate potable water supply system; a safe, adequate drainage system; and ample fixtures and equipment.