Equipment/skill required
3 water vessels/pots for processing; 1 for collection of dirty water and 1 for collection of clean water
if possible - a flexible pipe to siphon water as it disturbs sediment less than pouring
if possible - a cloth or any filtration barrier
Process
Pour water into the first pot (pouring it through cloth increases efficiency).
Let the water settle for as many hours as possible – a length of just one day can kill of more than 50% of most bacteria.
Pour water into a second pot, let it settle again.
Then pour into the third pot and let it settle again.
Drinking water is drawn from the third pot only.