Water supply and sanitation affecting health

1
Water supply and sanitation affecting health

2
Presentation overview

• Objectives
• Vietnam National Health Survey
• Diarrheal illness and poverty
• Analysis of WSS and health
• Recommendations

3
Background

• Objectives
• Assess health risks of drinking water supply and
  sanitation
• Identify population at risk of illness
• Assist in identifying water and sanitation sector
  priorities
• Large sample (36,000 households, 61 provinces)
• Information on
• sources of household drinking water supply,
• sanitation facilities,
• household behavior, e.g boiling and treating of
  drinking water,
• identified pollution sources near dug wells,
• prevalence and indicators of severity of
  diarrheal illness
• socio-economic status, e.g. living standard,
  education level etc

4
Sources of drinking water
5
Types of toilets
6
Findings from VNHS data
WATER, SANITATION AND HEALTH

Source Calculated from the Vietnam National
Health Survey 2002. Ministry of Health. Vietnam
7
(No Transcript)
8
Factors influencing ADI (under 5)
Factors influencing ADI (5 or older)
9
Factors influencing ADI (all population)
Only for people using dug well
10
Factors influencing of disease days of ADI (all
ages)
Population by quintile have using dug well close
to pollution source
11
Population using surface water by quintile
12
Population by quintile using dug well with nearby
pollution source
13
Population with no toilet by quintile
14
population with pollution source near drinking
water source (i.e. dug well)
population with no toilet
population using river, lake, spring, pond as
water supply
15
Proportion of population with pollutionsource
near water source ( of population with dug well)
Proportion of population using dug well water
16
Treatment of Drinking Water
17
Population using treated water by quintile
18
Recommendations

• Priority should be given to providing WSS to
  those without any services.
• Second priority should be to address dug well
  pollution. This requires further understanding
  of cost-effective sollutions
• It seems less important to focus on upgrading of
  services for those already with basic coverage
  (other than polluted dug wells).
• Additional health benefits could be gained by
  targeting poor households because of their higher
  ADI rates
• Hygiene promotion should be an integral part of
  WSS provision
• The study has identified provinces of particular
  priority for WSS programs

19
END