The most common method to sterilize water for human consumption is by boiling it.
Please only boil water for consumption that you know came from an otherwise clean supply source, such as bottled water that is past the expiration date, tap water that was stored in tightly sealed drums and containers made from food grade quality materials.
Water that is collected from rain barrels or flood waters, water from rivers and other outdoors streams, lakes or ponds may not be safe to drink even after boiling and will very likely require substantially more treatment that boiling alone.
Sterilizing Drinking Water by boiling:
1. Pour water into a clean pot and bring to a boil
2. Boil for at least 1 minute or longer for safety
3. Turn off the heat and let cool down.
Remember to cover your pot with a lid to conserve heating fuel and to prevent large amounts of water from evaporating into the air. The less water you lose in the process, the better.
Boiled water will lose oxygen which makes it taste slightly flat. You can improve the taste by putting oxygen back into the water by pouring it back and forth between two clean containers or stirring it with a whisk.