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Water, Sanitation and Hygiene

How to assess drinking water quality

Clean water is generally defined as water that is free from microbial, chemical and physical contamination. This includes contaminants that present a health risk (e.g. disease-causing bacteria, toxic metals) and those that have no health risk but can make the water unpleasant to drink (e.g. poor taste resulting from high ... Read More »

Using the Bristol stool scale to measure diarrhea

According to the WHO, diarrhea is “the passage of three or more loose or liquid stools per day, or more frequently than is normal for the individual”. Diarrhea is often a symptom of a gastrointestinal infection which can be caused by bacteria, virus or parasite. It can also be a ... Read More »

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