get out obj #9 &10 for a stamp review for today’s quiz obj #1-10 pass back the permission...
TRANSCRIPT
Houston Water sources:
Lake Livingston (806 MGD)
Lake Conroe (60 MGD)
Lake Houston (150 MGD)
Evangeline aquifer
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)
Conse
quence
s of
usi
ng o
ur
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?)
Houston is switching
to just surface water
to protect the city from further subsidence.
Overdraft leads to subsidence
Check
for
unders
tandin
g
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?