Distribution System: usually a larger town or city, like Cheyenne, Casper, or Rock Springs, where operators specialize in working in the distribution system. You may also work in a distribution system that obtains its water from another public water system, which is called a “consecutive” distribution system. You never work at a treatment plant. You are responsible for the distribution system, including installation, repair, and maintenance of water mains, valves, booster stations and pumps. You may also operate and maintain disinfection equipment. Distribution Systems come in Levels 1 and 2. Begin with the Level 1 Distribution System exam. Doesn’t sound like the right exam?