This lesson focuses on how we use water in our daily lives.Students calculate their weekly water use and predict howtheir use would change if water were less available or morecostly.

Students discover the direct link between land use andthe water quality of streams, rivers, and lakes whenthey observe how pollutants from various land uses canbe carried by runoff through the watershed, eventuallyreaching one of the Great Lakes.

Students discover that many contaminants cannot be seen,smelled, or tasted, so water chemistry analysis has tobe done to ensure the safety of drinking water. Studentsperform a serial dilution to observe that even an extremelysmall concentration of a contaminant can still pose a threatto human health.

Students identify common pollutants in storm water,compare the quantity of runoff from different land covers,and then apply this knowledge to their comparison oftwo aerial photos taken in 1975 and 2010, respectively, tohypothesize how land use and cover changes may affectthe quantity and quality of storm water runoff.

Drinking water comes from many different sources, including surface water and groundwater. Environmental engineers analyze the physical properties of groundwater to predict how and where surface contaminants will travel. In this lesson, students will learn about several possible scenarios of contamination to drinking water. They will analyze the movement of example contaminants through groundwater such as environmental engineers must do (i.e., engineers identify and analyze existing contamination of water sources in order to produce high quality drinking water for consumers).