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Irrigation and Water Quality
| Irrigated cropland provides a significant portion of the world's food supply and plays an important role in U.S. agricultural practices. However, irrigation-induced water contamination can include salts, nitrates, and pesticides to the point where major water resources can no longer be used for drinking without further (and expensive) treatment. Irrigation drainage can also include toxic concentrations of selenium, arsenic, and other metals that can result in adverse health effects and death in exposed fish and wildlife. The NRC has reviewed irrigation-induced water quality problems [view report] and provided advice regarding how to both reduce and prevent such problems. The NRC also conducted a Review of the Department of the Interior's National Irrigation Water Quality Program, which focuses on planning and remediation activities of that federal government program at four sites with irrigation-induced water quality problems. |
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