A cross-sectional descriptive study aims to describe the main domestic water sources and hygienic status at the households. The study was conducted in Nam Dinh and Dien Bien, with a total of 983 households. The results show that: 1) Most surveyed households were using hygienic water sources (mainly of which were drilled well water in Nam Dinh and protected spring water in Dien Bien); 2) 15.3 percent of households in Dien Bien were using water from open streams, rivers, ponds and lakes as the main water sources for preparing food and daily activities; 3) 80.2 percenr of households in Nam Dinh had main water sources with lowrisk pollution, meanwhile this figure in Dien Bien was 48.2 percent; 4) 15.6 percent of households in Dien Bien were using water sources with very high-risk pollution.
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