The document discusses World Water Day and the urban water challenge faced by rapidly growing city populations. It notes that half of the world's population lives in cities, and urban populations in Africa and Asia will double by 2030. As an example, it outlines that Los Angeles County has 9.8 million people and its large urban growth was enabled by William Mulholland conceiving the Colorado River Aqueduct in 1941 to supply water to LA. To help address this challenge, a 6th grade water research group at 68th Street School developed lessons on water conservation for younger students to do their part in helping ensure adequate water supplies.

1. 68thStreetSchoolRecognizes World Water Day!!!

2. Theme for 2011 – “Water for CitiesResponding to the Urban Challenge”The Los Angeles River from Downtown LA

3. World Water Day in LA . . . an exciting exploration for our 6th Grade Water Research Group. We learned that the largest water problem facing cities is “rapid urban population growth.” This means that city populations are growing more quickly than water can be found to serve them. Los Angeles view from the Department of Water and Power Los Angeles River

4. The population of the cities in the world is 3,300,000,000 people. The total world population is 6,900,000,000 people. 1 in 2 people live in a city. In Africa and Asia the urban population will double by 2030. Los Angeles, California, U.S.A.

5. The population of California is 37,000,000. Los Angeles County has 9,800,000 people. Los Angeles City is one of the most populated cities in the United States. We have a long history of water problems. William Mulholland conceived the Colorado River Aqueduct to bring water into LA 1941. It made our large scale urban population growth possible. William Mulholland and the Colorado River Aqueduct, LA’s Water Supply

6. It’s hard for nature and wildlife to survive.

7. What We Are Doing Here in LA 6th Grade dedicated students developed lessons for the other grades from Kinder – 5th about how to conserve water. We want to do our part to help the world, so we started by teaching the younger children here at home.

8. We teach water conservation so the world will have enough water.