Why not try drinking a little sunshine this summer?
Did you know the sun offers natural water filtration properties? Solar water traditionally combines cobalt blue with sunlight in order to alter the structure of the water molecules. Cobalt blue glass comes in a variety of forms. These 32 ounce glass cobalt blue bottles are available through Bottles and Foamers.
After filling each with tap or filtered water, place the bottles in direct sunlight for up to 6 hours. Recommendations vary from 1 hour to 6 hours. There’s no harm in leaving it longer.
(If using tap water it’s a good idea to leave the bottles uncapped overnight to allow the chlorine to evaporate.)
Some suggest keeping the bottles uncapped after placing in the sun to avoid changes in pressurization. I cap mine loosely.
I conducted a taste test with family members, offering a glass of tap water and a glass of solar water.
The tap water is pictured on the left below, solar water on the right. The tap water had been sitting for 20 minutes. (I have written previously about contaminants in tap water in a post titled Water Quality.)
The vote was unanimous in favor of the solar water. Participants noted the solar water tasted “sweeter and lighter.”
(Note: I have not done any lab testing on this solar water, nor am I aware of any lab testing done on solar water.)
While I still rely primarily on our Berkey water filter, I’ve been using solar water for kombucha, water kefir, and other fermented beverages. The kids enjoy drinking it straight from the refrigerator.
These bottles would be perfect for traveling—a cheap, simple, reusable water bottle! You can easily leave it in a hot car and not worry about chemicals leaching into the water.
This filtration method would be excellent to use with water from a gravity-fed spring. Wondering about gravity-fed springs? There may be one near you. See this previous post.
What do you do to filter your water? Have you tried solar water?