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An official website of the United States government.

The .gov means it's official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you're on a .gov or .mil site by inspecting your browser's address (or "location") bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that's been signed by the U.S. government. The https:// means all transmitted data is encrypted - in other words, any information or browsing history that you provide is transmitted securely.

NAL Agricultural Thesaurus and Glossary

U.S. Department of Agriculture

water pollution

: : : : : Natural Resources, Earth and Environmental Sciences; : : : environmental science; : : environmental degradation; : pollution; water pollution; . groundwater contamination; . . landfill leachates; . marine pollution; . radioactively contaminated water; . river plume; . thermal pollution

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