Looks at water pollution, its causes and impact, what individuals and governments can do to combat it, and the process of treating wastewater.

This site, from an archived Smithsonian exhibit, describes and illustrates the effects of toxic materials on wildlife in bodies of water.

Water pollution occurs when a body of water is adversely affected due to the addition of large amounts of materials to the water. The sources of water pollution are categorized as being a point source or a non-source point of pollution....

Many different kinds of organisms live in water. Excess nutrients can cause over-abundant growth of some organisms living in water and non-point source pollution is a major threat to water supplies in the United States. In this lesson...

Illustrated tutorial explains nonpoint source pollution and its role in the health of the environment. Students learn about different sources of pollution and how these pollutants contaminate the land, air, and water. Click on the links...

Provides a brief overview of the Clean Water Act. Includes links to its history and to information about compliance and enforcement.

Try to find at least eight things in the picture that could cause litter, waste, or other pollutants to end up in the storm drain and eventually flow into nearby lakes and streams. Includes a link to an interactive page of this activity....

In this lesson, students explore human impact on water resources, investigate the quality of their community's water supply, and consider ways to clean up and avoid further pollution. (Note: Some of the links may no longer work and...

This US Geological Survey site briefly discusses the basics of why pesticides are increasingly found in our ground water. Click Home to access the site in Spanish.

Students are challenged to design a healthy city in this unit plan. The cross-curricular unit covers content standards for ninth grade in science, language arts, world geography, and math. Students explore air quality and the impact it...

[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about efforts to reduce water pollution. Includes a few questions to check for understanding.

Find out how water pollution can be prevented and how it affects you.

A cross-curricular lesson working out needs of a town where fish are dying in the local waters, how can water be purified, how daily activities impact the water supply, and what role does chemistry play in the way individuals use water...

A captivating hands-on lesson where students create a watershed and its tributaries, then learn about the watershed's importance in geographic regions.

Lesson addresses the challenge of supplying clean water during times of a shortage and includes a look at the various water-treatment and filtration processes in place to insure a safe water supply.

Students will make a model of a pollution spill that occurred at Bangs Lake, a tidal lake within the Grand Bay National Estuarine Research Reserve in Mississippi, in April 2005, and measure water quality parameters in their model....

An introduction, aimed at upper elementary- and middle-school learners, to acid rain. [Click back to home to access the site in Spanish.]

In this guide helps students understand their garden as a model watershed through the collection and analysis of rainwater filtration data.[4.06]

Explains what hypoxia is, its causes, the sources, why it is important to reduce it, and where it occurs around the world. Includes a diagram showing how hypoxia develops in a water body and links to lots of additional resources.

Lists landfill issues such as leakage, water contamination, air emissions, and hazardous waste dumping. Gives extensive documentation site links.

Find out how British Columbia measures air quality, collects and measures data, and analyzes and reports the findings.

This concise article looks at the definition of sewage and the cost of treating waste water.

Tad the Tadpole is designed to demonstrate how pollution in various areas affects wildlife in their native habitats. The lesson is designed to stress the importance of conservation for animals and their surrounding environment. Upon...

Describes research into the pollution caused by plastics that are hidden in the fibers of synthetic clothing, and eventually end up in the ocean after laundering. Cites other research that discovered plastic pellets found throughout the...