Environmental Science

1. ENVIRONMENTAL SCIENCE
WATER MANAGEMENT

2. The ROLE of WATER
• Water plays an important role in our life
• Most of activities and lives are influenced by water

3. Although 97% of the world is covered in
water, only 3% is fresh water.

4. The HYDROLOGIC Cycle
- Is a constant recycling process of WATER
- Having two important processes: evaporation and
condensation of WATER.
- The process of WATER evaporated from the leaves
of plans (which take up water from the soil) called
evapotranspiration.

7. Human influences on
the Hydrologic Cycle
Human activities can influence the hydrologic
cycle in many ways.
Some aspects of the hydrologic cycle can be
utilized by humans for a direct economic benefit.

8. Kinds and Sources of Pollution
 Municipal Water Pollution
 Agricultural Water Pollution
 Industrial Water Pollution
 Thermal Pollution
 Marine Oil Pollution
 Groundwater Pollution

9. Municipal Water Pollution
Municipalities are faced with the double-edged problem of
providing suitable drinking water and disposing of wastes.
• These wastes consist of storm water runoff, wastes from
industry, and wastes from homes and commercial
establishments.
• Wastes from homes consist primarily of organic matter from
food preparation, cleaning of clothes and dishes, and human
wastes.

11. Agricultural Water Pollution
• Agricultural activities are the primary cause
of water pollution problems.
• Water pollution from agricultural farms not
only damages the environment and kills
wildlife, but it can also kill people.

13. Industrial Water Pollution
• Industry is a huge source of water
pollution, it produces pollutants that are
extremely harmful to people and the
environment.
• Many industrial facilities use freshwater to
carry away waste from the plant and into
rivers, lakes and oceans.

15. Thermal Pollution
Thermal pollution is the degradation of
water quality by any process that changes
ambient water temperature.
A common cause of thermal pollution is the
use of water as a coolant by power plants
and industrial manufacturers.

17. Marine Oil Pollution
Oil-polluted stormwater and sewage from
municipalities, dribbing and drabbing from numerous
sources in coastal facilities, gaseous hydrocarbons
from our cars and motor boats, and many more such
on-land or recreational coastal activities that we do
not link to marine oil pollution - those are the
constant sources of a large and never-ending input of
oil to the marine environment.

19. Groundwater Pollution
A groundwater pollutant is any substance that, when
it reaches an aquifer , makes the water unclean or
otherwise unsuitable for a particular purpose.
Sometimes the substance is a manufactured
chemical, but just as often it might be microbial
contamination. Contamination also can occur from
naturally occurring mineral and metallic deposits in.

21. WATER-use planning issues
There are three main basic WATER services:
• Water supply for human and industrial needs
• Waste water collection treatment
• Stormwater collection and management

22. To meet future
needs, urban, agricultural and
national interests will need to deal
these issues:
• Increased demand for water will generate
force to supply water for human’need.
• Improving the system for treatment and
purify.
• When water used to flush the salt from
the soil is returned on stream and the
quality is lower.

23. • If the ground water is pumped out faster
than it is replaced, the water table is
lowered.
• In the coastal area, seawater may intrude
into the aquifer and ruin the water
supply.
• The demand for water based recreation is
increasing dramatically.

26. Thank you
for listening!