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Unformatted text preview: 1 Lecture 19: Water Resources 1. Water: Basic facts 2. Water availability and use 3. Types of pollutants 4. Important laws 5. Issues: POINT versus NONPOINT 6. Issue: Groundwater pollution Suggested Reading: Tepfer, K. 2004. The real price of water. Frontiers in Ecology & Environment 2:59. Water pollution Any physical, biological, or chemical change in water quality that adversely affects living organisms can be considered pollution. Groundwater Pollution About half the U.S. population, and 95% of rural residents, depend on underground aquifers for drinking water. Issues: Groundwater pollution Some pollutants removed as water moves down to aquifer (many pathogens, for instance). Extremely difficult to remove pollutants from ground water. Groundwater and Drinking Water EPA estimates 4.5 trillion liters of contaminated water seep into the ground in the U.S. every day. Point vs. Nonpoint _____________________ ones that are discrete & easy to ID in landscape. Examples: smoke stacks, factory pipes, sewage plants....
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This note was uploaded on 04/06/2011 for the course FNR 103 taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.
- Fall '08