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WAS512S-WATER AND SANITATION-JAN 2020 |
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NAMIBIA UNIVERSITY
OF SCIENCE AND TECHNOLOGY
Faculty of Health and Applied Sciences
DEPARTMENT OF HEALTH SCIENCES
QUALIFICATION : BACHELOR OF ENVIRONMENTAL HEALTH SCIENCES
QUALIFICATION CODE: 08 BOHS
LEVEL: 5
COURSE CODE: WAS512S
COURSE NAME: WATER AND SANITATION
SESSION:
JANUARY 2020
PAPER:
THEORY
DURATION:
3 HOURS
MARKS:
100
SECOND OPPORTUNITY/SUPPLEMENTARY EXAMINATION QUESTION PAPER
EXAMINER
MRS BUHLEBENKOSI MPOFU
MODERATOR | MS CHARMAINE JANSEN
INSTRUCTIONS
1. Answer ALL the questions.
2. Write clearly and neatly.
3. Number the answers clearly.
PERMISSIBLE MATERIALS
NONE
THIS QUESTION PAPER CONSISTS OF 3 PAGES
(Including this front page)
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SECTION A
[20 MARKS]
QUESTION 1
1.0 Define the following terms as used in Water and Sanitation:
1.1 Deep Well.
1.2 Water table.
1.3 Permeable rock.
1.4 Vault.
1.5 Soil drain.
QUESTION 2
2.0 Differentiate the following terms:
2.1. Protected and unprotected water source.
2.2. Sedimentation and filtration.
2.3. Distillation and Membrane Filtration.
2.4. Onsite Sanitation and Basic Sanitation.
2.5. Desludging and Night Soil.
SECTION B
[35 MARKS]
QUESTION 3
(10 marks)
[2]
[2]
[2]
[2]
[2]
(10 marks)
[2]
[2]
[2]
[2]
[2]
(15 marks)
3.1. Identify any five (5) advantages of ground water.
[5]
3.2. Describe any five (5) factors you would consider for the development of a new water
source for a community.
[10]
QUESTION 4
(20 marks)
4.1 Outline any five (5) methods of effluent disposal.
[10]
4.2 Explain any five (5) reasons why water is sampled.
[10]
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SECTION C
[45 MARKS]
QUESTION 5
(45 marks)
5.1. With the aid a diagram, explain the septic tank system.
[20]
5.2. Using examples, discuss any five (5) major challenges facing Namibia in the
provision of safe drinking water. What can be done to reduce these challenges? [25]
TOTAL MARKS = 100
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