A plumber is a skilled tradesperson who specializes in the installation, repair, and maintenance of various systems related to water supply, drainage, heating, and sanitation. A plumber should be able not only to perform a variety of plumbing tasks but also to communicate with both commercial and residential clients. The plumber is sometimes the only person a client interacts with, so customer service can be a big part of the job. The ability to keep accurate and complete records is also important. The job description for a plumber may vary depending on the specific job setting, but generally, the duties and responsibilities of a plumber include: