As the first chemical-free, all natural public swimming pool in the United States, the Webber Natural Swimming Pool is a self-contained swimming vessel that uses plants and natural microbes from a nearby regeneration pond to clarify and purify the water instead of chemicals for sterilization or disinfection.
Follow Ultrafacts for more facts!
This is so cool! I’ll take 4!
from Tumblr http://ift.tt/1GGWk7M
via IFTTT