If you remember me talking about water storage a while back, I said that 2-Liter soda bottles were the container of choice. I will use other containers, but I like the 2-Liters. They are made of a plastic called Polyethlene Terephtalate, or Pet or Pete for short. It is a food grade plastic, is tough as nails, and hasn’t been found with significant leakage of BPA. I use these bottles to purify water as well. This water solution employs the power of the sun. Not an indirect, petroleum based, low efficiency solution like solar panels, but the direct, ever abundant sun. This is called SOLIS, which stands for Solar Ultraviolet Water Disinfection. It is actually used by many groups to purify water in developing countries, is basically free, and decentralized. Most of you want to use your berkey water filter, but if that isn’t available, here is another option.
The basic idea is to use the UV rays of the sun to kill the bacteria in the water. The World Health Organization has actually approved this method as a viable method for water treatment and storage at home, having tested for the concerns of leaching materials and antimony. The steps are simple:
Note: I use aluminum foil to intensify the UV rays, and many people setting up water purification in poor countries put them on tin roofs to do the same thing.
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