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Hygiene and Environmental Health

Hygiene and Environmental Health

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Sanitary inspection of a well with handpump
Figure 16.3 Sanitary inspection of a well with handpump. The numbers refer to the questions in Box 16.1. Note: MSD means ‘minimum safe distance’. MSD will vary depending on local conditions but should not normally be less than 15 m. (Source: World Health Organization, 1997, Guidelines for drinking water quality, Volume 3)

 16.5  Sanitary survey of wells