This module, published by the Advanced Technology Environmental Education Center (ATEEC), is part of a series of instructional materials on environmental technology and decision-making. This module focuses on the science-based background and research on nonpoint source water contamination. Additionally, the resource promotes teaching critical thinking through the inclusion of resources and activities for use in the classroom. The module explores contamination formation, environmental impact, contamination's fate and transport, measuring and monitoring contamination, decision-making, and remediation. A case study and aids to understanding are also provided. User...