In the United States, a plumbing apprenticeship generally lasts between four to five years, during which aspiring plumbers gain hands-on experience under the supervision of licensed professionals. The process begins with obtaining a high school diploma or equivalent, followed by completing vocational training or attending a trade school, which can last from several months up to two years. Throughout the apprenticeship, individuals work full-time while learning essential skills such as pipe installation, repair, and safety protocols. After completing the required hours of on-the-job training and classroom instruction, apprentices must pass a licensing exam to become licensed plumbers. This comprehensive process ensures that plumbers are well-trained and qualified to perform their duties safely and effectively.