Best Filtered Water Bottles of 2025, Tested in the Santa Monica Mountains

A filtered water bottle has filters that remove microplastics, bacteria, sediment and harmful contaminants like lead and pesticides from water. To find the best filtered water bottle, I visited a freshwater source in Southern California's Santa Monica Mountains. I tested the bottles in a tiny pool of water that looked the least stagnant. After filling the bottles, I drank the water and poured some out to see how clean it looked. Once I drank and examined the water from each filtered water bottle, I evaluated each based on its filtering mechanism, the materials it is made of, the taste of the water, ease of use and how easy it is to clean it. What is the best filtered water bottle overall? Grayl The Grayl Geopress Water Purifier is the best overall filtered water bottle because our tests found that it turned natural water into fresh-tasting bottled water. The purification system is the most intense of the bottles tested. It can filter out chemicals, pesticides, particles, heavy meta ... Read full article.