Daily Water Use - Willis' Science



Water Usage in Your Household: How Much Water Do You Use?

Part One Directions:: Fill out the table below to calculate how much water you use in a month.

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|This chart will help you calculate how much water your household uses a month. If you have water-saving appliances or toilets, your use may be somewhat less than the amount you have calculated on the | |

|chart. | |

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|Showers | |

|Multiply the number of daily showers by the number of minutes each shower takes. Now multiply that number by 3 gallons per minute used. Enter the number in the box. | |

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|Baths | |

|Multiply the number of daily baths by 36 (gallons in a full bath) or 18 (gallons in half tub). Enter the number in the box. | |

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|Toilets | |

|Multiply the number of persons in the home by the number of daily flushes. (The average is four per person). Multiply that number by 3, the number of gallons used per flush. Enter that number in the | |

|box. | |

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|Brushing  Teeth | |

|Multiply the number of persons in the home by the number of daily tooth brushings. Multiply that figure by 3 (the number of gallons used while the faucet runs for one minute). Enter that number in the| |

|box. | |

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|Dish Washing | |

|Multiply the number of times per day dishes are washed by the number of minutes the water is running.  Multiply that number by 3. Enter that number in the box. | |

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|Hand Washing | |

|Multiply the numbers of times per day hands are washed by the number of minutes the water is running. Multiply that number by 3. Enter that number in the box. | |

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|Dishwasher | |

|Add the number of times per week you run the dishwasher and divide by 7 to obtain the average daily usage. Multiply that figure by 12 (the number of gallons used by each wash).  Enter that number in | |

|the box. | |

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|Laundry | |

|Add the number of loads of laundry done weekly and divide by 7. Multiply that figure by 44 (the number of gallons used per load). Enter that number in the box. | |

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|Other Indoor Use | |

|The people in your household use water in other ways. Multiply the number of persons in the household by 10 gallons.  Enter that number in the box. | |

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|Outside Watering | |

|You also use water outside (watering plants, washing cars, filling pools, etc). Multiply the number of minutes you have a hose turned on by 6 and enter that number in the box. | |

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|Now calculate your household's daily use. Add up all the boxes to get an estimate of the gallons of water used daily. Enter in the box. |  |

|Next, calculate your monthly use by multiplying the amount used daily by 30. Enter that number in the box. |  |

|This is your estimated monthly usage. |  |

Part Two Directions: Now, Calculate the Gallons Used Per Person Per day from the Total Monthly Usage (Take to the total and divide by 30 days and then divide by how many people live in your house).

Gallons Per Person Per Day

120 gal/day

Poor You use a lot of water. Read the conservation tips below to learn how to conserve water in the home.

Analysis: Answer the questions below using complete sentences.

1) How much water is used per person in your household? Where does this rank using the above chart?

2) What area of water usage did you spend the most water on? Why do you think that is?

3) With the category mentioned in Question 2, what are 2 conservation ideas that you could use to save water?

4) Compare your water usage with your neighbor’s water usage. What were similarities and differences with your water usage?

5) Why does a city like Los Angeles really need to conserve its freshwater? Explain.

6) Lawns, although pretty and nice to play soccer on, consume much freshwater in Los Angeles. If you were mayor of Los Angeles, how would you urge people to remove their lawns? Explain.

7) Why does the usage of native plants decrease freshwater consumption? Explain.

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