a) Components of environment
b) Importance of healthy environment

a) Water :
– Sources and characteristics of safe and
wholesome water
– Uses of water.
– Rain water harvesting
– Water pollution – natural and acquired
impurities
– Water borne diseases
– Water purification-small and large scale
b) Air :
– Composition of air
– Airborne diseases
– Air pollution and its effect on health
– Control of air pollution and use of safety
measures.
c) Waste :
– Refuse – garbage, excreta and sewage
– Health hazards
– Waste management: collection,
transportation and disposal.
d) Housing:
– Location
– Type
– Characteristics of good housing
– Basic amenities
– Town planning
e) Ventilation:
– Types and standards of ventilation
f) Lighting:
– Requirements of good lighting
– Natural and artificial lighting
– Use of solar energy
g) Noise
– Sources of noise
– Community noise levels
– Effects of noise pollution
– Noise Control measures
h) Arthropods:
– Mosquitoes, housefly, sand fly, human
louse, rat fleas, rodents, ticks etc.
– Control measures

a) Levels and types of agencies:
– National, state, local
– Government, voluntary and social
agencies.
b) Legislations and acts regulating the
environmental hygiene.