This certification is designed to test the knowledge that a journey level plumber has of the Uniform Plumbing Code published by the International Association of Plumbing and Mechanical Officials (IAPMO). The NITC journey level plumber certification is covered under the scope of NITC's ANSI accredidation. The NITC journey level plumber certification is based on a 100 question written examination consisting of questions on general knowledge of plumbing, drainage, waste and vent, water distribution and fuel gas piping from the 2006 edition of the Uniform Plumbing Code.