Water Footprint Worksheet, Rev

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Brigham Young University, Idaho *

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203

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Geography

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Dec 6, 2023

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pdf

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ENVIRONMENTAL STEWARDSHIP Name: FDSCI 203 Rev. 5, 2023 Water Footprint Worksheet Exercise 1 – Calculating Your Water Footprint The concept of a water footprint is based on the idea that everything we produce and consume requires a certain amount of freshwater. Freshwater is often considered our most precious resource, and in some regions it is in very short supply. It’s relative ly easy to determine how much water we use directly (drinking, cooking, bathing, etc.) but how much water do we use indirectly in the production of various consumer goods? To calculate your water footprint, go to https://www.waterfootprint.org/ . Click on the “ Calculate Your Water Footprint ” tab to begin. Scroll to the bottom and select the “ Extended Water Footprint Calculator .” (You can also move your cursor over the “ Resources ” tab at the top, then “ Interactive Tools > Extended Water Footprint Calculator ” ) You may not know exact amounts for some of the categories but estimate as best you can. If you are unfamiliar with kilograms (kg), one kg = 2.2 lbs. When you have completed the calculator page, submit it and it will return your individual water footprint. Record that value below. My individual water footprint: m 3 /year How many gallons of water is that? gallons of water (There are 264 gallons in one cubic meter of water) What is your water footprint in liters/day? (There are 1000 liters in each m 3 of water and 365 days/year) Exercise 2 – Comparing Water Footprints Go back to the top of the page and scroll over “ Resources, ” then “Interactive tools” and select the “National Water Footprint E xplorer” link. Move the cursor over the map to select a country. Record the water footprint per capita for the countries listed below. USA liter/day Canada liter/day Brazil liter/day Russia liter/day Germany liter/day China liter/day How does your own water footprint compare to the US average? How does your water footprint compare to the global average of 3800 liters/day? ±²²³´² µ¶·¸³¶´·µµ µ¹·¶´¸³²¸³ ¸º»» ·¹»» µ·»» µ±»» ³²»» ¶²»» S_ ]GYKW KUUYUWOSY OY GGU[Y ³»¼ QKYY YMGS YMK ;9 G[KWGMK S_ ]GYKW KUUYUWOSY OY ±´¹¹ YOSKY GY S[IM GY ³º»» QOYKWY½IG_

Calculating Your Water Footprint Page 2 Exercise 3 – Virtual Water Consumption 1. Food Products . Again, scroll over the “ Resources ” tab at the top of the page, then “Interactive tools” and click on the “Product Gallery ” link. Here you can view a list of various products and the water required to produce that item. Determine the global average water footprint for the following food items? Convert liters into gallons (there are 3.8 liters/gallon). You may have to read the information to get the answer. Bread (wheat) liters/kg = gallons of water/kg Beef liters/kg = gallons of water/kg Lettuce liters/kg = gallons of water/kg Chocolate liters/kg = gallons of water/kg Coffee (roasted) liters/kg = gallons of water/kg 2. Cotton Products . Cotton is one of the most water-intensive crops grown. What is the virtual water requirement for the following? Cotton fabric liters/kg = gallons of water/kg A pair of jeans (800 g) liters/kg = gallons of water Cotton produced in which country has the largest water footprint? Exercise 4 – Glossary Scroll over the “ Water Footprint ” tab at the top of the page and select “ Glossary. ” Using the glossary, define the following terms. 1. Blue Water Footprint 2. Green Water Footprint 3. Grey Water Footprint Now, return to the “ Product Gallery. ” Using the six products we looked at in Exercise 3, answer the following questions. (List the product and the percent of its global average water footprint from that particular water source, i.e., blue, green, or grey) A. Which one has the largest blue water footprint? B. Which one has the largest green water footprint? C. Which one had the largest grey water footprint? ±·»º ¶³¸ ±µ¹±µ ±¸±²· ±º²»» ¹¶¹´¸² ¹»¸¶ ·µ´¶µ ¹µ¹¶´¸ ¹²²¶´ºµ ±»»»» º»»» ¶·¹±´¸¶ ¶±±³´³º IUYYUS IMUIUQGYK QKYY[IK ;UQ[SK UK Y[WKGIK GSI MWU[SI]GYKW IUSY[SKI GY G WKY[QY UK YMK UWUI[IYOUS UK G MUUI UW YKW[OIK´ ;UQ[SK UK WGOS]GYKW IUSY[SKI I[WOSM YMK UWUI[IYOUS UWUIKYY´ 9MK MWK_ ]GYKW KUUYUWOSY UK G UWUI[IY OY GS OSIOIGYUW UK KWKYM]GYKW UUQQ[YOUS YMGY IGS GK GYYUIOGYKI ]OYM YMK UWUI[IYOUS UK G UWUI[IY U[KW OYY K[QQ Y[UUQ_ IMGOS´

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