Services provided may include: ongoing pipe maintenance, fastening of mixers or their replacement, solving sewage problems and water flow regulation. The job of a professional specialist is to ensure that cold and warm water flows in your home without interruptions, and that sewage is removed correctly. Professional plumber must have a high level of knowledge and competence in plumbing. Such a specialist must know how to install, to fix and maintain various plumbing items which may include: pipes, taps, ventilation systems, heating systems and the installation and maintenance of many other components.