One of twelve water treatment technology units, this student manual on flouridation provides instructional materials for three competencies. (The twelve units are designed for a continuing education training course for public water supply operators.) The competencies focus on the following areas: purpose and process of flouridation, correct flouride dosage, and proper measurement and handling techniques for flouride chemicals. For each competency, student objectives, resources (information sheets and appendix materials), learning activities, and evaluation activities are provided. The appendices contain information sheets on flouridation of public water supplies and laboratory equipment and supply requirements for a small water treatment plant providing complete treatment. Generally, an evaluation form with answer key is provided for each competency. (JH)