Boil the water for at least 1 minute
Use a water filter designed to remove contaminants
Add chlorine or iodine tablets as directed
Let dirt and sediment settle, then pour off the clear water
Strain water through a clean cloth or coffee filter
Use activated carbon to reduce some impurities
Disinfect with ultraviolet light if available
Distill the water by boiling and collecting the condensed steam
Store cleaned water in a clean, covered container
Wash hands and containers before handling water