This document is an instructional module package prepared in objective form for use by an instructor familiar with Federal and Iowa laws relating to public water supply and water pollution control, local code enforcement and right-of-way acquisition. Included are objectives, instructor guides, and student handouts. The module considers an overview of the U.S. Environmental Protection Agency (EPA) and the Iowa Department of Environmental Quality (DEQ), and analyzes the Federal Water Pollution Control Act Amendments of 1972 (PL 92-500), of the Federal Safe Drinking Water Act (PL 93-523), and the Iowa Administrative Code pertaining to water pollution control and public water supplies. This module also covers the acquisition of right-of-way by a municipality and the function of municipal ordinances. (Author/RH)