2. WATER
POLLUTION
CONTAMINATIO
N OF WATER
BODIES
(LAKES,OCEANS,
RIVERS)BY
HUMAN
ACTIVITIES.
CHEMICAL,PHYSI
CAL OR
BIOLOGICAL
CHANGE IN THE
QUALITY OF
WATER. LOSS OF ANY OF
THE ACTUAL OR
POTENTIAL
BENEFICIAL USES
OF WATER CAUSED
BY ANY CHANGEIN
ITS COMPOSITION
3. MAJOR WATER POLLUANTS
Suspensio
n
sediment
Water
soluble-inorganic
substances
Oxygen –
demanding
wastes
First, are
disease-causing
agents. like
bacteria,
viruses etc
4. WHERE DOES WATER POLLUTION
COME FROM?
• Water pollution come from human activities.
Point
sources
Discharge pollutants
at specific locations
through pipelines or
sewers into the
surface water.
Examples: factories,
sewage treatment
plants, underground
mines, oil wells.
Non point
sources
Sources that cannot
be traced to a single
site of discharge.
Examples : acid
deposition from the
air, traffic.
5. Accide
ntal oil
leakage
Causes
of water
pollution
Marine
dumping
Industri
al
wastes
Mining
activitie
s
6. • Leakage
from the
landfills-landfills
are nothing
but huge
pile of
garbage
• Chemical fertilizers
and pesticides:
• when these
chemicals are
mixed up with
water produce
harmful for plants
and animals. Also,
when it rains, the
chemicals mixes up
with rainwater and
flow down into
rivers and canals
which pose serious
damages for
aquatic animals.
• Radioactive
waste: nuclear
energy is
produced using
nuclear fission or
fusion. The
element that is
used
in production of
nuclear energy is
Uranium which is
highly toxic
chemical. The
nuclear waste
that is produced
by radioactive .
7. Death of
aquatic
animals (fishes,
sea gulls,
dolphin)
Effects of
water
pollution
Disruption
of food
chain.
Water and
Climate
Change
Destruction
of
ecosystem
8. Cholera
Effects of
water
pollution on
human health
E.Coli
infection
s
Hepatitis
Typhoid
fever
9. Prevention
of water
pollution
Throw the wastes in
the bins not outside
like lakes, rivers
etc.
Do not use
excessive
fertilizers and
pesticides for
agriculture.
Do not throw
medicines,oils,paints
down the sink or
toilet.
