Download - Get out Obj #9 &10 for a stamp Review for today’s quiz Obj #1-10 Pass back the permission slip!
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Get out Obj #9 &10 for a stamp
Review for today’s quiz Obj #1-10
Pass back the permission slip!
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Where does your water come from?
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Houston Water sources:
Lake Livingston (806 MGD)
Lake Conroe (60 MGD)
Lake Houston (150 MGD)
Evangeline aquifer
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1. Screening
2. Coagulationalum
3.Sedimentation
4. Filtration
5. disinfection:chlorineUV rays
ozone
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Check out the 2012 water report Identify:
Five radioactive particles. One fat soluble herbicide One heavy metal which causes brain damage Three organic chemicals that probably come from
petroleum refineries How many of these contaminants were higher than the
Maximum Containment Level? (MCL)
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Cons
eque
nces
of
usin
g ou
r gro
und
wate
r
Overdraft – taking more water OUT of an aquifer than is recharging IN to the
aquifer (What would happen
to your bank account if you did this?)
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Wat
er h
as m
ass
in a
n aq
uife
r
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Subs
iden
ce –
sinkin
g of
land
due
to a
quife
r ov
erdr
aft
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Bayt
own
– Br
ownw
ood
subd
ivisio
n
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Brow
nwoo
d 19
53
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Brow
nwoo
d 19
78
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Bayt
own
Natu
re
Cent
er to
day
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Saltwater intrusion
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Houston is switching to just surface water to protect the city from further subsidence.
Overdraft leads to subsidence
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Chec
k fo
r un
ders
tand
ing
What is the role of alum in
water treatment?What materials is the filtration
system made out of ?Why is chlorine added to our
drinking water?Why is fluoride added to our
drinking water?How are subsidence and overdraft related?
Why does it matter that our
drinking water supplies are
downstream of Dallas?