Using Water Wisely
Think About It
1.Where do you think
the water you drink
comes from?
2. What is ground water
and water supplies?
Groundwater
► The
water found inside the rocks below Earth’s
surface.
Aquifer
► The rock layer that stores groundwater and allows the
flow of groundwater.
Groundwater
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Water table
► The upper surface of underground
water.
Overdraft
► In
some of the aquifers more water is being
pumped out that is being replaced by rain.
Water in California
► Reservoirs
supplies water you drink and use to
shower.
► California Aqueduct carries water from Northern
California to Southern California because there is
not enough rainfall.
List all sources from which Californians
get water.
California acquires its water from
precipitation and by transporting the
water from Northern California and from
other areas.
Water Pollution
► Waste
matter or
other material that is
introduced into water
and that is harmful to
organisms.
Water Pollution
Clean Water Act of 1972
► Restore
and maintain the chemical, physical, and
biological integrity of the nation’s waters.
► Goal was to make all surface water clean enough
for fishing and swimming by 1983
Summarize how the Clean Water Act of
1972 has helped reduce water pollution.
The Clean Water Act of 1972 has helped
to improve the water quality of lakes
and rivers so that they are fit for fishing
and swimming. Also, the act opened the
door for other water-quality laws.
Conservation
► The
preservation and
wise use of natural
resources.
Conserving Water
► Farmers
use drip irrigation reducing runoff and
evaporation
Farmers
Conserving Water
► Install
low-flow toilets
and shower heads
► Water lawn at night
► Xeriscaping- design
landscape with native
plants.
Conservation
List four things that you can do to conserve
water.
I can avoid running water while brushing
my teeth, take shorter showers, wash the
car with only a bucket and hose, and wash
only full loads in the dishwasher and
washing machine.
Review Questions
1.
Why does Northern California transport water to
Southern and Central California?
Northern California receives most of the state’s
precipitation. However, most of the state’s
population lives in Central and Southern
California. Therefore, water from the north
needs to be transported to areas that need the
water.
2. Why is it better to water your lawn at night instead of
during the day?
If you water your lawn at night, less water will be lost to
evaporation.
3. How is reducing the pollution in streams and
groundwater linked to water conservation?
Reducing the pollution in streams and groundwater means
there is more clean water that can be used. Therefore,
reducing pollution conserves clean water.