Sixteen self-study waterworks operators training modules are provided. Module titles are the following: basic mathematics, basic chemistry, analysis procedures, microbiology, basic electricity, hydraulics, chlorination, plant operation, surface water, ground water, pumps, cross connections, distribution systems, safety, public relations, and management. Each module generally includes a list of performance objectives, module pretest with answer key, information sections, self-tests for each section with answer keys, and a post evaluation with answer key. (Author)