Several natural materials are incorporated into modern water filtration systems to help remove potential contaminants so you can enjoy safer and tastier water.
Create a Water Filter from Recycled and Natural Materials - Pinnguaq
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6 ways to purify water without expensive technology
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Water Filtering Systems: Types, Applications, Advantages, and
Low-cost filters use plant waste to remove heavy metals from water
Natural materials successfully filter greywater - Society for Science
Potassium Permanganate Water Treatment
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LifeStraw is ideal for hiking, backpacking, camping, travel, and emergency preparedness. The straw-style filter design lets you turn up to 1,000 liters of contaminated water into safe drinking water. Lets you drink directly from streams and lakes or from any container. Uses advanced hollow fiber membrane technology to filter up to 264 gallons or 1,000 liters of water to 0.2 microns. Removes 99.9999% of waterborne bacteria, including E.
Eartheasy LifeStaw Personal Water Filter
Common plant species used for water purification.
MIT engineers make filters from tree branches to purify drinking water, MIT News
The 6 Best Backpacking Water Filters