The LifeStraw Peak Series Compact Gravity Water Filter System is our go-to for clean water at the campsite, during our hike, or as we travel the country in our RV. Its durable construction features BPA-free, FDA-approved, premium materials for long-lasting and trustworthy use and is designed to eliminate 99. 999% of microplastics, silt, sand, cloudiness, parasites, and bacteria.