Water
Pollution
You
know
water can
be healthy or
unhealthy…
But how does
it get this
way???
What is Water
Pollution?
Pollutant
– The
addition of any
substance that
damages the
water quality
and makes it
dangerous to
drink or use.
Where do these pollutants
come from?
Factories
Farms
Households
What do they each contribute to
the pollution problem?
Types of Pollutants You
Might Not Think Of!
 Biodegradable
 Heat
Waste
 Sediments/Erosion
 Bacteria/Medical
Waste
Any other
examples?
How do
these
pollutants
get into
the water?
There are 2 ways pollutants get
into the water:
POINT
SOURCE
POLLUTION
NON-POINT
SOURCE
POLLUTION
Point Source Pollution
Comes from a single
identifiable source
 Enters the water directly

Example:
A
paper mill pouring chemicals into a
stream
Non- Point Source Pollution
 Comes
from many sources
that are not easily identified
 Gets into the water
eventually (RUN-OFF)
 Example:
 Pesticides
from a farm runoff into a creek after a rain
storm
Pollution Protest !!!
You
will be given an
example of either
Point or Non-Point
Source Pollution.
Raise your sign when I
tell you to protest
which type of
pollution you think is
correct!
Point or Non-Point?
Oil
spilling from a
tanker
Point or Non-Point?
Irrigation
from farms
washes pesticide and
fertilizer into a river
Point or Non-Point?
Sewer
pipe
draining
human
waste into
the ocean
Point or Non-Point?
Sediment
washed into
the river from
a construction
site

Point or Non-Point?
Fire
burning in a landfill;
water from fighting the fire
will move downhill to the
nearest water source…
Point or Non-Point?
Battery
acid leaks from cars
onto the parking lot and is
followed by a big rain storm
Point or Non-Point?
Sludge
from a
chemical
plant
flows into
a stream

Point or Non-Point?
Factory
that
produces plastic
storage
containers
dumps liquid
wastes into a
nearby river
Point or Non-Point?
A
deadly
bacteria from
cow waste
makes its way
into a nearby
drainage
ditch
Point or Non-Point?
A
dangerous
acid enters the
air from a coal
mine in West
Virginia and will
eventually
contribute to
acid rain
Point-Source examples:
 Pipe
from Sewage Plant
 Pipe from Industrial Factory
Point-Source examples:
Non-Point Source examples:
Biomagnification/Bioaccumulation
 Pollution
gets into smaller organisms
 Amount builds up as it gets passed up
food chain
 Chemicals could end up in food eaten by
humans
What
is in
place to
prevent
water
pollution?
What is the government doing
to protect our water?
 Environmental
 Sets
Protection Agency (EPA)
and enforces standards for wastewater
that is released into bodies of water or used
as drinking water.
 Clean
Water Act (CWA)
 (Established
by the EPA), the Clean Water Act
regulates the discharge of pollutants into the
waters of the United States and regulates
quality standards for surface water
 Basically makes point source pollution illegal
What
can
YOU do to
protect
our
water?
What can you
What can YOU do to
protect our water?
Stewardship:
YOUR
own
personal role in
caring for
Earth’s waters
If our water is polluted…
How do we make water
safe to drink and use for
everyday life?
 What needs to be taken
out before we can use it?

Wastewater Treatment
Wastewater
The dirty water that
runs down our drains
& sewers that must be
cleaned before it can
go into lakes, rivers,
etc. or be reused.
“ The Sparkling Water Story”
Listen
and follow
along as you see
firsthand how we
impact the
cleanliness of our
water everyday!
Sparking Water Story Part 1
 Darin
wakes up bright and early to start
his day. Since it’s Saturday, it’s his turn to
water his mom’s plants. Darin grabs the
plants & carries them to the sink. He is not
paying attention because he is watching
cartoons at the same time. He puts too
much water on the plants causing the
pot to overflow and spill soil into the sink.
He quickly rinses it down the drain so he
doesn’t get into trouble, and then runs off
to watch his cartoons.
Sparkling Water Story Part 1
 Dad
has managed to get the coffee
started and when it is done Dad pours a
cup of coffee for himself and a cup for
Mom; then goes to read the paper. Mom
appreciates his effort but sighs as she
realizes he didn’t take the coffee grounds
out of the coffee maker and throw them
away. She removes them but sees the
garbage is full. “It wont hurt to put these
down the sink,” she says to herself.
Sparkling Water Story Part 1
As
mom throws the coffee grounds
down the drain she realizes that the
garbage disposal smells bad and
decides to put a little lemon juice
and baking soda in the drain to clean
the disposal.
Sparkling Water Story Part 1
 Becky
walks into the kitchen and decides
to try to make homemade biscuits for
breakfast, but she burns them. Nobody
wants to eat the dry, burned biscuits.
Darin excuses himself to the bathroom
where he flushes his food away. Mom
rushes to do the dishes and “accidentally”
drops her biscuits down the drain and
turns on the water and garbage disposal.
Sparkling Water Story Part 2
 The
family’s day continues as Dad and
Darin go outside to wash the car. They
spray the car down, soap it up, and
rinse it off. The soapy water runs down
the driveway into the storm drain.
Sparkling Water Story Part 2
 Darin
notices that the car has been
leaking motor oil, so he decides to spray
down the driveway. He sprays and
sprays, until he is convinced that he has
gotten all of the motor oil off and just a
stain remains. The motor oil runs into the
storm drain.
Sparkling Water Story Part 2
 Mom
and Becky are now outside taking care
of Mom’s garden. Mom is spraying the
plants down with pesticides so that insects
and animals don’t eat them. Becky is
sprinkling fertilizer on the plants to make sure
that they grow. Darin thinks to himself, “Well,
I’m going to help them out and water the
garden.” Darin sprays the hose over the
plants. Mom screams for him to stop, but its
too late, all of the fertilizer and pesticide has
been rinsed off, and it too eventually makes
it’s way to the storm drain.
Filtration Lab: Roles
 Filtration
Engineer/Leader – creates the
“blue print” for your system with input from
group members BEFORE you just start
filtering and waste supplies
 Supply Management – 2 people
responsible for supplies & clean up
 Scribe – Responsible for leading the
discussion, filling out the lab questions for
your group & turning them in
Filtration Lab: Create your
own filtration system!!
 Use
the whiteboard to create a detailed
plan that includes step by step instructions
and diagram as to how each item in your
kit will be used…
 Please show me your plan BEFORE I allow
your supply management person to get
water!
Filtration Lab Clean-Up:
 All
water can go back into the main tank, all
chunks MUST go back into the tank or into the
garbage! ONLY clear water can go down the
drain at your assigned sink
 GARBAGE: Used coffee filters & used cotton
balls can go straight in the garbage
 WASH: Other supplies need to be rinsed and
dried!!
 RETURNED BIN SHOULD HAVE: Marker, metal
screen, plastic strainer, spoon, pipette, plastic
cups
 LAB QUESTIONS SHOULD BE IN THE BASKET!

Steps to the
Wastewater
Treatment
Cycle
Step 1. Coagulation
Coagulation:
Chemicals are
added so that waste particles
stick together into “floc,” so they
can easily be removed.
“Stick & Scoop” step
Step 2. Sedimentation
Sedimentation:
The heavy
particles settle to the
bottom and the clear
water moves on
Step 3. Filtration
Filtration:
The water passes
through filters made of
different materials
Step 4. Disinfection
Disinfection:
A small
amount of chemicals
are added to kill
bacteria
(usually chlorine)
Step 5. Storage
Storage:
Water is stored in a
closed tank to be used by
the community
Wastewater Treatment
Wastewater Treatment
Process:
http://www.youtube.com
/watch?v=tuYB8nMFxQA
But what happens when
your city doesn’t have a
proper sewer system?
Toxic Water: The Sewers
of Mexico City
 http://www.youtube.com/watch?v=
3a_4YhxN2vo&feature=fvst