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Marino Morikawa is a special person. He used his PhD degree to clean his childhood lake. When he came back to the Cascajo wetlands in 2010, his father told him that they were contaminated and that they were about to be capped.
At the time, Marino worked at the Tsukuba University laboratories in Japan. But he decided to fly back to Peru to see the lake with his own eyes.
And that is where the magic happened. Once he saw his childhood memory ruined, he decided to use his knowledge about nano technology to clean the lake. This short documentary explains just how he did it.
Quick Recap
Best Value
Lormandy Straw Water Filter 5 Pack - Outdoor Camping & Hiking Survival Gear
- 【A 5-Pack Built for Real Life】A 5-pack designed for real-life travel — everyone gets their own straw, making every trip feel more organized and comfortable. No sharing, no waiting, just smoother, more prepared outings for families, friends, or teams. Ideal for group camping, road trips, or building a family emergency setup.
- 【Built with Food-Grade Materials You Can Count On】Anything that goes near your mouth should feel trustworthy. The water filter has passed multiple certifications. Every component is made with food-grade materials(BPA-free), giving you peace of mind whether it’s tossed in a dusty backpack, packed for a road trip, or stored in your home emergency kit for unexpected water disruptions. A small, reliable tool that earns your trust over time.
- 【Easy to Drink, Even When You’re Tired】Outdoors, you don’t always have time or energy to stop and deal with complicated outdoor gear. This straw is made for those moments — when you’re tired, out of breath, or needing water fast. The low-effort sipping feels natural, helping you stay hydrated while keeping your rhythm on the trail.
- 【Pocket-Ready Simplicity】Some gear requires instructions. This one doesn’t. No setup, no learning curve — just grab it and go. Complete with accessories for greater convenience. The ultra-light, compact size fits pockets, hydration bags, daypacks, or bug-out bags without adding weight, perfect for anyone who prefers gear that simply works.
- 【Ready for the Moments You Don’t Expect】Trips don’t always go as planned — detours happen, weather shifts, and sometimes clean water isn’t where you expected it to be. Combination of Sediment prefilter, 0.1 hollow fiber UF membrene filter straw, Remove all visible solid sediments, reduce 99.99999% of harmful substances, and improve the odor. Keeping one straw in your car, one in your pack, and extras at home gives you confidence for unplanned detours, emergencies, and everyday preparedness.
Rank #4
Aquatabs Water Purification Tablets, 397mg 100 Pack, Camping & Emergency
- TRUSTED WATER PURIFICATION TABLETS - Aquatabs are the world's leading water purification tablets for drinking; the ultimate choice for portable water treatment & emergency drinking water; Removes 99.9999% Bacteria, 99.99% Viruses, & 99.9% Cysts (Giardia).
- FEEL SAFE OUT THERE - Experience rapid water purification with our 397mg tabs; purifies 4 gal in 30 mins; an essential emergency water filter & water purifier for camping; the top choice for water filtration camping gear.
- BE BETTER PREPARED - These lightweight water filter survival tablets are a must for your bugout bag; a key part of portable water filters survival kits; perfect for emergency preparedness & RV water treatment for drinking water.
- ENJOY GREAT TASTING WATER - Our water cleaning tablets have no bad taste, color, or odor, unlike iodine tablets. Get clean hydration without the awful iodine taste; pair with a water filter bag or water filter straw survival for sediment.
- HIKING WATER PURIFIER - Trust these emergency water purification tablets as your main hiking water filter; a vital water filter backpacking & water purifier backpacking tool; safer than untreated water. Expiration Date: February 2029
Rank #3
Sale
Waterdrop Gravity Water Filter Straw, Camping Water Filter, 0.1 Micron
- 5-Stage Efficient Filtration: With adoption of premium-quality 0.1 um ultrafiltration membrane and other raw materials, the Water Filter Straw can effectively reduce harmful substances like chlorine, particulates, sediment, stones, sand, dirt, bad taste &odor in water to ensure the water safety and deliver better drinking experience.
- Professional Combination: Waterdrop Gravity Water Filter Straw with 1.5 gal Gravity-Fed Water Bag is an exclusive water purification combination created for outdoor activities and first aid survival. The large-capacity water bag can hold up to 1.5 Gallons of water at a time, which is about 11 bottles of 500 ml bottled purified water, and can meet the all-day demand for outdoor water drinking.
- Longer Lifespan: The Waterdrop Filter straw can provide safe drinking water up to 1,400 gallons (5,300 liters), and ensures the maximum water flow rate of up to 700 ml/min to provide more relaxed outdoor water drinking experience.
- Recyclable Straw: With innovative backwash purifier function, the inside of the Water Filter Straw can be kept clean at all times and it is recyclable, safe and pollution-free. If the water flow decreases or the filter has been used for a long time, you can remove the mouthpiece, flush it with clean water. (Standard water bag can be used or pop bottle with thread diameter of 27.5mm can be filled clean water for backwashing the filter straw.)
- Versatile Uses: The Water Filter Straw can be connected with water bags or water bottles to filter water for drinking. Both ends of it can be disassembled and connected with the water bags and the water bottles to offer you clean drinking water anytime anywhere.
Rank #2
Practical Survival Gravity Water Filtration System, 6-Piece Kit, 1800 Gal
- CLEAN WATER ANYWHERE: Our gravity water filtration system removes over 99.99% of waterborne bacteria (such as E. coli and Legionella) and parasites (such as Giardia and Cryptosporidium), and filters microplastics down to 0.1 micron, with a high-capacity core that cleans up to 1800 Gal
- LIGHTWEIGHT & PORTABLE: Weighs approximately 1.5 lbs and fits easily in any backpack or hanging bag, making it ideal for hikers, hunters, campers, survivalists, or any outdoor adventure where clean water access is uncertain
- READY FOR ANYTHING: Two oversized hanging bags hold 6L each for basecamp or group hydration. Includes dirty and clean water bags, 1800-gallon filter, cleaning plunger, bag connectors, and a carry bag. Compatible with any standard soda or water bottle thread
- SETUP IN 60 SECONDS: Simply fill the dirty water bag, hang from a tree, connect the filter and clean bag, and let gravity do the work. Built-in port fixtures join securely to standard screw-top bottles. An excellent option for single hikers, families, or large group use
- BUILT TO LAST: Made from high-quality materials that handle the wear and tear of wilderness adventures and emergencies. High-capacity core filters up to 1800 Gal, providing nearly 10 years of clean water without pumping or complex assembly
#1 Best Overall
LifeStraw Personal Water Filter for Hiking, Travel and Emergency, Blue, 1PK
- Removes Bacteria & Parasites: The Microfiltration Membrane Removes 99.999999% of Waterborne Bacteria (Including E. Coli and Salmonella), and 99.999% of Waterborne Parasites (Including Giardia and Cryptosporidium) - Essential for Your Survival Kit
- Removes Microplastics: Removes the Smallest Microplastics Found in the Environment (Down to 1 Micron), and Reduces Turbidity Down to 0.2 Microns - Ideal for Hiking and Camping Essentials
- Rigorous Testing: All Claims Are Verified with Laboratories Using Standard Testing Protocols Set by the US EPA, NSF, ASTM for Water Purifiers
- Long Lifetime: The Microbiological Purification System Will Provide 4,000 Liters (1,000 Gallons) of Clean and Safe Drinking Water - a Must-Have for Your Bug Out Bag
- Make an Impact: For Every LifeStraw Product Purchased, a School Child in Need Receives Safe Drinking Water for an Entire School Year. Essential Camping Accessory Made With BPA Free Materials
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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