Your water, our best water filters.

MSR Guardian Water Purifier

  • The Guardian Purifier by MSR offers military-grade engineering and game-changing technology, so you can purify water virtually anywhere on earth including the nastiest swamps right here in Canada.

    Easy to use, compact, rugged and certified to NSF P238, this portable water purifier is perfect for global travelers, backcountry users, and those stocking emergency kits.

    Did we mention it offers full viral protection, withstands freezing and drop testing and... treats 2.5 L per minute?

  • The Guardian Purifier is the world’s most advanced portable water purifier. Nothing is safer or easier to use for purifying the most demanding water sources. 

    Fast and easy to use, this pump purifier offers the added viral protection you need when traveling in developing countries. Its advanced hollow fiber filter offers the most reliable way to purify even filthy water conditions. Add its long-lasting performance (it treats up to 10,000L!) and revolutionary self-cleaning ease, and this may be the only water treatment device you’ll ever need.

    Click here for our full collection of MSR Guardian Replacement Parts.

    Why You Need the MSR Guardian Purifier:

    • Effective Against: Viruses (99.99%), bacteria (99.9999%), protozoa (99.9%) and particulate.
    • Hollow fiber filter meets U.S. EPA drinking water standards* and NSF protocol P248, U.S. military testing standard. *U.S. EPA Guide Standard and Protocol for Testing Microbiological Purifiers.
    • Fast and Easy: Pumps a rapid 2.5 liters per minute, offering added viral protection without the need for chemicals, bulbs, batteries, or waiting.
    • Self-Cleaning: Pump self-cleans on every stroke, providing consistently fast flow rates with zero hassle—no backflushing or filter-scrubbing ever required.
    • Long-Lasting: Leading-edge hollow fiber cartridge treats up to 10,000+ liters.
    • Extremely Durable: Engineered to withstand heavy use, freezing, drops*, and harsh environments. *Withstands MSR water lab drop testing: 6 ft. to concrete.
    • Weight (Standard) 1 lbs 1.3 oz
    • Weight (Metric) 0.49 kg
    • Made in the U.S.A. of U.S. and Imported Materials


  • Shipping

    For full Elua shipping details, please visit our shipping page.

    Fellow Canadians

    Enjoy FREE SHIPPING in Canada on orders over $60 and a fantastic $9.95 flat rate shipping for orders over $20.

    Most orders ship by Canada Post Expedited Parcel but we're happy to send by Purolator or UPS Ground upon request. Need faster service? Give us a call, we'd be happy to arrange. Yes, we ship from Canada!

    We ship from Thunder Bay, Ontario, smack dab in the middle of Canada.

    Most orders process and ship within 1 business day by Canada Post Expedited Parcel. Orders received by 12 noon EST often ship same day!

    The transit time for most orders is 2-5 business days. Isolated and rural areas may take longer. Need it faster? Give us a call at 1-8888-998-0030 and we'll happily quote and arrange overnight, expedited shipping using Purolator or UPS.

    Please make sure to include your full shipping address AND phone number using a standard format. Missing phone numbers, incorrect or partial addresses can result in long delays, lost shipments and returned orders.