WASH

Question 1

How many people globally have access to good WASH?

Answer 1

2 billion use H2O contaminated with faeces
2 billion don’t have basic sanitation facilities
3 billion lack basic hand washing facilities at home

Question 2

What is the affect of WASH on healthcare?

Answer 2

1.9 million deaths attributed to WASH in 2016
60% diarrhoeal disease due to WASH
43% schistosomiasis deaths associated with poor was
SDG 6: clean water and sanitation for all by 2030

Question 3

What are the sources of drinking water?

Answer 3

Rainwater harvesting
Ground water
Surface water

Question 4

What are the pros and cons of chlorination of water?

Answer 4

Add sodium hypochlorite 
No infrastructure required, cheap
Can be done on turbid water
Affective against bacteria, viruses and Protozoa
Tastes bad

Question 5

What are the pros and cons of sunlight UV irradiation of water?

Answer 5

Direct sunlight 6hours, 2 days cloudy day
Small scale
Effective against bacteria, viruses and Protozoa
Relies on weather
Can’t be done on turbid water

Question 6

What are the pros and cons of biosand filtration?

Answer 6

Concrete container full of sand
Removes bacteria and Protozoa
Low maintenance 
Initial cost then costs of sand replacement 
Removes turbidity

Question 7

What are the pros and cons of ceramic filters?

Answer 7

Last a long time and produced locally
Environmentally friendly
Effective against Protozoa and bacteria
Low capacity

Question 8

What are the barriers to improved WASH?

Answer 8

Lack of political will
Curative focus on health rather than preventative
Human behaviour
Expense
Inequality