Find out more about the SODIS water purification system and get a modern yet practical way to get safe drinking water.
In this article:
- Knowing Ways to Purify Water for Survival Is Vital
- Introducing the SODIS Water Purification Method
- How to Purify Water with SODIS
SODIS: Modern Water Purification Method for Survival
Knowing Ways to Purify Water for Survival Is Vital
Water purification is a very handy skill to have in your back pocket. Out in the wild, you will need it for sure.
The water you find in the wilderness may be unsafe with disease-causing bacteria.
Tap water is also not always safe to drink at home sometimes. This is evident in well-documented incidents of water contamination.
This element is so vital to our survival, regardless of our situation, which means clean water is a must. Thus we need to know several if not all methods to purify water.
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Be it water purification systems for camping or water purification systems for home, you need to know more for your survival.
Introducing the SODIS Water Purification Method
SODIS, or solar ultraviolet water disinfection, is one of our favorite emergency water purification systems. It is a portable water purification system which uses solar energy or UV-radiation to disinfect contaminated water.
During its time in the sun, the UV-radiation kills off harmful germs and diarrhea-causing bacteria. It’s also convenient since it is a kind of portable water filtration system.
Despite the fancy acronym, this water purification system is actually simple and works for free. All it requires to purify water is a bottle, sunlight, and a little time.
How to Purify Water with SODIS
This water purification method is simple, but also very tedious with the materials used. Here are the steps to this water purification method with tips to do it the right way:
1. Pick Your Container
Using a clear or light blue bottle is a must; both plastic and glasswork great. You may also potentially use a plastic water bag, such as a Ziploc.
Do not use a container more than three liters because this water purification system only works with fairly small containers. Your water container must also be very clear and free of scratches.
The water clarity needs to be clear, as well. If you have a scratched bottle or murky water, the sun cannot penetrate through the bottle of water.
2. Check Water for Clarity
If you are not sure if the water is clear enough, try peeking through the bottle then read a newspaper headline through the bottom of the bottle.
Although you may not have a newspaper handy, this is a good tip to keep in mind. If you do not believe it could be clear enough, then the water is probably not useable.
3. Filter the Water If Unclear
If the water is a little murky, you can try using a thin cloth, such as a bandana, and filter the water through the cloth.
This will help eliminate some sediment or moss going into the water bottle.
4. Pick the Right Spot
Once your water bottle is full, set it in direct sunlight for at least six hours. If there are half clouds or less, you should double the amount of time to 12 hours.
If there are full clouds, you should let the water sit for two days. Be sure to pick a spot which will not get a lot of shade during the day.
The bottle should be in direct sunlight during its exposure time. Come back later, and enjoy your clean drinking water.
This video from RedDog Fabrication will give you another idea for purifying large quantities of water using the SODIS method:
Explore all methods of procuring yourself a safe drinking method in case of a survival situation with limited resources.
This SODIS water purification method should be on top of your list. It is simple, viable, and basic resources or materials to help you are available around you.
Would you consider this water purification method to get drinkable water? Let us know your thoughts about it in the comments section below!
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Editor’s Note: This post was originally published on April 23, 2014, and has been updated for quality and relevancy.