The document discusses various topics related to water usage and conservation. It covers: 1) Why water conservation is important given its scarcity and essential role for life. Freshwater resources are limited and many regions face water shortages. 2) The main categories of water usage - domestic, agricultural, and industrial. Agricultural usage accounts for the majority through irrigation. Industry mostly uses water for cooling purposes. 3) The sources and impacts of water pollution including point sources, non-point sources like agricultural runoff, and how groundwater especially is difficult to clean once polluted. 4) Key US water legislation and their goals like the Clean Water Act to improve water quality and the Safe Drinking Water Act

1. Announcements – March 14, 2011 The Program in Ecology, Evolution, and Conservation Dr. Ashwini Chhatre Department of Geography, UIUC " Patterns and drivers of joint distribution of multiple ecosystem services from human-dominated forests " Wednesday, March 16, 2011 4:00 P.M. B102 CLSL Auditorium

5. Water is critically scarce in parts of the world

8. The Mahomet Aquifer

12. http://environment.nationalgeographic.com/environment/freshwater/embedded-water/

21. Dilution was thought to be the best solution for wastes Chicago Ship and Sanitary Canal reversed the flow of the Chicago River Chicago originally pumped its raw sewage into Lake Michigan Before 1900, many deaths from typhoid fever and cholera

22. Mon March 10, 2008 Prescription drugs found in drinking water across U.S. (AP) -- A vast array of pharmaceuticals -- including antibiotics, anti-convulsants, mood stabilizers and sex hormones -- have been found in the drinking water supplies of at least 41 million Americans, an Associated Press investigation shows. Officials in Philadelphia say testing there discovered 56 pharmaceuticals or byproducts in treated drinking water. To be sure, the concentrations of these pharmaceuticals are tiny, measured in quantities of parts per billion or trillion, far below the levels of a medical dose. Also, utilities insist their water is safe.

38. Colorado River

39. How much water do you use every day? Simple steps for domestic water conservation

40. Precipitation in coastal San Diego Co. averages 216-240 mm/year (9-10 inches/yr). A typical household in San Diego uses an average of 1220 mm (49 inches) of water /year for outdoor use/irrigation. San Diego County Water Authority

41. Orange officials sue couple who removed their lawn March 02, 2010|By Amina Khan City codes require that live landscaping cover 40% of the yard. Quan and Angelina Ha say their water use has dropped 80% since they replaced the grass with wood chips and drought-tolerant plants. Some Southern California cities fine residents for watering their lawns too much during droughts. But in Orange, officials are locked in a legal battle with a couple accused of violating city ordinances for removing their lawn in an attempt to save water.