A smartphone application — mWater — is helping a Tanzanian local authority to monitor drinking water for contamination and to map the quality of waterways.
Contaminated water is one of the causes of diarrhoeal disease, which kills around 760,000 children under five annually worldwide, according to the WHO.
Mwanza city, where the trial is taking place, has problems with monitoring water supply safety because microbiology laboratories and incubators for water testing are expensive to use.
