the lack of domestic supply leaves families especially children vulnerable to lifethreatening diseases dangerously low water consumption levels and very poor sanitation standards and hygiene practices in the home and at school it is estimated that to per cent of sanaa is connected to public sewage while the rest relies on individual solutions which negatively affects the underground water reservoir the combination of dwindling domestic water resources with poor access to sanitation is a catalyst for enteric illnesses that drive malnourishment rates upwards importantly water scarcity affects subpopulations of the city differently with the most vulnerable being refugees asylum seekers idps migrants and more broadly poor residents in informal settlements