Plumbers are responsible for the installation, maintenance, and repair of plumbing systems and fixtures in residential, commercial, and industrial buildings. They use hand tools, power tools, and specialized equipment to diagnose and repair plumbing problems.

Based on the 976500 people who completed an IQ test at BRGHT, the average IQ of people who work as Plumber is 99.82. With this IQ score, Plumber ranks #219 on the list of jobs by average IQ.

It is important to remember that intelligence is complex and multifaceted, and that intelligence tests do not capture all aspects of human cognitive ability. The BRGHT IQ Test measures candidates' logical reasoning, numerical and spatial reasoning skills.