This document discusses water quality parameters and their importance for determining water usage. It notes that only 3% of the world's water is fresh water found on continents, while 97% is saline ocean water. Water quality is determined by physical, chemical, and biological properties like temperature, pH, dissolved solids, hardness, dissolved oxygen, and bacterial counts. Understanding these parameters is important for relating India's drinking water situation to pollution levels and mitigation methods from a chemistry perspective.

1. Presented by:-
Name = Sumer Sikri
Class = 9th-C
Roll No.= 39

2. Study the drinking water
parameters and relate it to the
Indian Scenario state wise. List out
the methods to reduce the
pollution level in drinking water in
reference to chemistry.

3. ● Without water, there can be no life.
● Every living thing--plants, animals, and people--must have water
to live.
● Water is used in almost all activities of lifesupport systems
● Water is a major abiotic factor in the environment.
● Water is a common substance.
● It fills the oceans, rivers, and lakes.
● It is in the ground and also in the air we breathe.
● Water is used for drinking, all domestic purposes,
agriculture, industrial applications, cleaning and
recreation.

4. World’s Water Distribution:
●Three fourth’s of
the earth surface is
covered by water
●97% of World’s
water is in the
seas and oceans.
●This water is
saline.
●Only 3% is
present on the
continents. This
water is fresh.

5. Quality determines its Usage:
● Water has its own taste, color, smell
and constituents.
● Not all water can be used for all
purposes.
● Eg. Sea water can not be used by
us for drinking.
● The suitability of water for
different purposes is
determined by its quality
parameters.

6. Water
Quality
Parameters
Physical
properties
Chemical
composition
Biological
Properties

7. 1 Temperature
2 Colour
3 Odor
4 Turbidity
7
5 Electrical Conductivity
Physical Properties:

8. Chemical properties:
pH
Total Dissolved Solids(TDS)
Major ions
Minor or trace elements
Hardness
Salinity
Alkalinity

9. Biological Properties:
● Dissolved Oxygen (DO)
●Biochemical Oxygen
Demand(BOD)
●Chemical oxygen
Demand(COD)
●Microorganisms-Bacterial
counts