Plumbing, Level 1 , is the first installment of NCCER's four-part plumbing program. A complete curriculum for a fast-growing profession, this popular series trains future plumbers in installing, repairing and maintaining pipe systems. Level 1 introduces you to plumbing, including plumbing safety, math and drawings, as well as the tools, materials and systems of the trade. As you go, you'll also develop critical-thinking, judgment and active-listening skills needed for sound decision-making. In collaboration with industry partners, the 5th Edition has been fully revised to meet a growing demand for plumbers. Featuring a new, easy-to-read design, the revision focuses on service and on the tools and methods of modern plumbing.