Water Usage

The daily average for our class was 316 gallons of water per person per day.  The U.S. national domestic water use is 80-100 gallons of water per person per day.  I think our class is higher because Arizona gets hotter than other states and gets longer and more droughts than some other states.  The people in our class get hot and use a lot of water without knowing how much water they use.  The heat here in Tucson, Arizona might account for the difference between our class and other classes in the United States.  The results surprised me.  The watering the lawn category surprised.  I didn’t know that watering the lawn used so much water.  I thought it would be closer to the U.S. national average.  We did this project because we wanted to find out and compare how much water we used to people around the world.

I have learned that our class uses a lot of water and that schools in California use much less water than we do because they get more precipitation.  I also learned that since we live in a hot dessert, we need more water.  I predict that people in dryer places will need more water than people in wetter places.  My hypothesis is that the colder states that get more precipitation will use less water than people will in dry places.  My family and I use a lot of water because we have a big family and water our lawn a lot.  We also have to do a lot of laundry.  I believe that people in Arizona use more water than people in Ohio because Ohio gets more precipitation than Arizona.  In 1990, people used 259 billion gallons of water per day of surface water and 79 billion gallons of water per day of ground water.  That means in 1990, in total people in the U.S. used 338 billion gallons of water per day.

My prediction was wrong because California used 412.25 gallons of water per day and here in Arizona we only used 316.00 gallons of water per day.  My hypothesis was right because people in Washington used less water than we did in Arizona. Washington used 100.00 gallons of water per day and Arizona used 316.00 gallons of water per day.