MAD? Monitoring, analysis and decisionmaking – what we need to make sure alternative water sources are safe.
Examples: The MudWatt, Dough Lab or BioGlow by Magical Microbes https://www.magicalmicrobes.com/
Many of these may be too expensive or not quite right for developing countries or routine use, but they are a good start to optimise from.
Do you know of others? Let us know in the comments!