A World of Water Part 2
description
Transcript of A World of Water Part 2
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Today’s Goal:
To learn where your drinking water comes from and the steps that are taken to make sure your tap water is clean and safe.To explore some history of water in Kentucky and McCreary County.
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Water played a critical role in defining early settlements.
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Most major cities were first settled due to their location near a water supply
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What are the two main rivers that run through McCreary County?
1. The Big South Fork River
2. The Cumberland River
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Follow the Flow
The Gulf of
Mexico
The Mississippi
River
The Ohio River
The Cumberland
River
The Big
South Fork River
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McCreary County Water District was started in 1962 with 75 customers.
1962
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A World of WaterPart 2Today, McCreary
County Water District has over 6,000 customers.
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The Water District also provides water for the Federal Prison in Pine Knot, Cumberland Falls State Park, and even another county (Whitley County).
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McCreary County now has over 2,000 fire hydrants.
Over 2,000
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McCreary County Water District uses surface water from two sources.
1. The Big South Fork River2. The Laurel Creek Reservoir
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The two water treatment plants that are operated by McCreary County Water District can treat up to 6,500,000 gallons of water a day.
6.5 MILLIO
N
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Intake Flash Mix Coagulation
Sedimentation Polishing Basin Filtration
Disinfection Fluoridation Storage Pumping
Let’s go through the treatment
process together
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Water can be withdrawn from The Big South
Fork River or the Laurel Creek
Reservoir at three different levels.
Intake
MCWD’s Raw Water Intake – located near Big Creek on the
BSF River
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Electric pumps move the water
into the flash mix while chemicals are added to it.
Flash Mix
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The chemicals make tiny pieces of dirt and debris stick together.
When the particles get big
enough, they sink to the bottom.
Coagulation
Before After
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The water moves through a settling
chamber and through settling
tubes where it slows down, allowing the
sediment to fall out
Sedimentation
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When it comes to water
treatment, TIME is your
friend!
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Water then moves into the final
clarifying chamber where it is given additional time to
allow any remaining
particles to settle
out.
Polishing Basin
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Water passes through filters made of coal,
sand, and gravel.
Filtration
Coal
Gravel
Sand
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Chlorine is added to disinfect the water.
Disinfection
Kills Germs!
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Adding Fluoride to the water helps prevent cavities.
Fluoridation
Eating too Much Ice Cream
Doesn’t
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Water then moves to the clearwells,
which are approximately one million gallons of
underground reservoirs.
Storage Now the water’s
ready to be shipped to your
house!
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Electric pumps give the water just the boost it needs
to get moving toward your
house.
Pumping