1. BHASKARACHARYA COLLEGE OF APPLIED
SCIENCES
(UNIVERSITY OF DELHI)
DEPARMENT- POLYMER SCIENCE
EVS ASSIGNMENT
WATER POLLUTION
GROUP –(K)
A Presentation by
Piyush Kumar Paswan (2008048)
&
Satpal (2008042)
Under the Guidance of
Dr. Franky Varah
2. WATER POLLUTION
“Our liquid planet glows like a
soft blue sapphire in the hard-
edged darkness of space. There
is nothing else like it in the solar
system. It is because of water.”
– John Todd
3. WATER POLLUTION
Introduction:-
Water pollution occurs when
harmful substances— often
chemicals or
microorganisms—contaminate
a stream, river, lake, ocean,
aquifer, or other body of water,
degrading water quality and
rendering it toxic to humans or
the environment.
4. SOURCE OF WATER POLLUTION
TWO TYPES SOURCE OF WATER POLLUTION
1. Point source---
When contamination
occurs from a single
source, it’s called point
source pollution. Though
this pollution originates
from a specific place, it can
affect miles of waterways
and ocean
Ex: Factories, sewage
treatment plants,
abandoned underground
mines and oil tankers
5. SOURCE OF WATER POLLUTION
TWO TYPES SOURCE OF WATER POLLUTION
2. Non point source--
Nonpoint source pollution is
contamination derived from
multiple or diffused sources.
These may include
contaminated water travelled
after rains, agricultural or
storm water runoff, or debris
blown into waterways from the
land.
Nonpoint source pollution is
considered as the leading
cause of water pollution, but
it’s challenging to regulate
since there’s no identifiable
source to blame.
8. VARIOUS CAUSES OF WATER POLLUTION- 3/5
Industrial chemicals Mining activities Miring dumping
9. VARIOUS CAUSES OF WATER POLLUTION- 4/5
Accidental oil leakage Acid rain
10. VARIOUS CAUSES OF WATER POLLUTION- 5/5
Landfills are nothing but
a massive pile of
garbage that produces
the awful smell and can
be seen across the city.
When it rains, the
landfills may leak, and
the leaking landfills can
pollute the underground
water with a large
variety of contaminants
Leakage From the Landfill
11. NOTE
Underground water pollution is caused by
arsenic.
To find the ground water pollution; find the
quantity of arsenic.
Arsenic content as the amount of
underground water pollution increase
To check any water pollution; its BOD is
checked
BOD--- biological oxygen demand
Check their oxygen content.
The lower the amount of oxygen, the purer
the water.
12. EFFECT OF WATER POLLUTION 1/2
Oxygen deficiency in aquatic
animals
Reduced reproduction of
aquatic organisms
Loss of crops due to
irrigation with polluted water
Water polluted disease can
be cholera, giardia, typhoid,
hepatitis etc.
Heart, kidney, mind can be
related disease
The natural balance is
distributed.
13. EFFECT OF WATER POLLUTION 2/2
Algae and aquatic
plant are destroyed.
Dissolved oxygen
content in water
decrease
PH values
Economical effect
Effect of coral reef
14. CONTROL OF WATER POLLUTION 1/2
Every house should have a seftic
tank
Industrial waste product should be
applied before purification
Separate water source should be
used for the use of animals
Use of fertilizers and pesticides
should be controlled in agricultural
work.
Insecticides, fungicides
(Fungicides) etc. As permissible
substances should be used. The
use of hazardous pesticides
should be banned.
15. CONTROL OF WATER POLLUTION 2/2
Water from the heat and nuclear power
stations should be purified after cooling,
and should be left in the water sources.
Use of fertilizers and pesticides should be
controlled in agricultural work.
The sea must be saved from molecular
explosion.
Periodically, harmful plants should be
removed from the water sources.
People should not bathe in river, pond,
lake.
16. CONSERVATION OF WATER BODIES BY GOVERNMENT
Ganga Action Plan (GAP)
National River Conservation Plan
National Plan for Conservation
of Aquatic Ecosystem : NPCA)
1. National Wetland Conservation
Program
2. National Lake Conservation
Plan
Water (Prevention and Control of
Pollution) Act 1974
Namami Gange Program
17. NOTE
1. Currently it covers the polluted portion of 40 rivers of
121 cities spread across 19 states.
2. On the orders of the Comptroller and Auditor General
of India (CAG), Environmental Research Laboratory
(ERL) Lucknow has divided the water into five
categories after testing the quality of water
Category A – Suitable for drinking
Class B (Category B) – Suitable for bathing, swimming
and recreation
Class C – Potable after conventional treatment
Category D (Category D) – Suitable for wildlife and
fishes
Category E (Category E) – Suitable for irrigation,
industrial cooling and waste disposal
