Field Trip - Northern Guam Lens Aquifer Jun 2014 | Página 28

Managing Supply
and Demand
Decadal Average 2000-2010
Exceptional - less than 30 mg/l
Good - 30 to 70 mg/l
Standard - 70 to 150 mg/l
Marginal - 150 to 250 mg/l
Out of standard - over 250 mg/l
No data

American Waterworks Association (2014)1
U.S. daily per capita water use

➤ Without conservation measures:

indoor + outdoor use = 98 gallons

indoor use only = 69 gallons (70% of total)

➤ With conservation measures:

indoor use = 45 gallons (65% of indoor non-conserving)

By installing more efficient water fixtures and regularly checking for leaks,

households can reduce daily indoor per capita water use to about 45 gallons per day.

➤ Here’s how it breaks down for households using conservation measures:
CLOTHES
WASHERS 10.0

TOILETS 8.2

18.0%

22.1%

DISHWASHERS 0.7

1.5%
BATHS 1.2

SHOWERS
8.8

2.7%

19.5%

LEAKS 4.0

8.8%
OTHER 1.6

FAUCETS
10.8

3.4%
And for Guam?*

23.9%

For 40 mgd consumption (from all sources) and 200,000 people,
daily per capita consumption = 200 gallons
1

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http://www.drinktap.org/home/water-information/conservation/water-use-statistics.aspx
* Hypothetical estimate for educational discussion only.

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