Personal Water Filtration Straw


The Cascade Mountain Tech Personal Water Filtration Straw helps alleviate extra weight carried on your adventures by allowing you to source your water from the various creeks, rivers, and lakes you may find along the way. The 3-Stage water filtration makes drinking from most bodies of water safe. This awesome new adventure buddy is ideal for hiking, traveling, and camping. The sleek and compact design makes it easy to bring it with you anywhere you need safe drinking water. 

Purchase with confidence: All Cascade Mountain Tech Personal Water Filtration Straws come with a 1-year manufacturer’s warranty. Warranty and Return Policy Details


  • Effective: Removes 99.9999% of bacteria and 99.997% of parasites
  • Safe: Meets NSF P231 testing protocol and US EPA Standards for removal of bacteria and parasites
  • Long Lasting: Filters up to 1000 gallons of water**
  • Human-Friendly: Chemical free filtration and made with BPA-free materials
  • Portable: Ultralight & Compact Design

** Filters up to 1,000 gallons of water dependent on water conditions. See instructions and FAQ below for information on how to get the most out of your filtration straw.


  • Weight: 4.25 oz
  • Dimensions: 5.9" x 1.5" x 1.8"
  • Material: ABS Plastic

3-Stage Filtration:

Stage 1: Sediment filter

  • Filters out large water-borne particles
  • Increases filtration performance and longevity

Stage 2: Hollow Fiber Membrane

  • Removes 99.9999% of bacteria
    (E. coli, Salmonella, etc.)
  • Removes 99.997% of parasites
    (Giardia, Cryptosporidium, etc.)
  • Reduces microplastics

Stage 3: Activated Carbon

  • Reduces bad odors
  • Improves taste of water

* Filter performance dependent on correct usage of filter and may be limited by environmental or hygienic conditions. Read instructions carefully before use.


Read included usage and safety instructions carefully before using the Personal Water Filtration Straw. Failure to comply with the instructions and warnings contained in the instruction booklet may result in adverse performance of and/or damage the device.

Cascade Mountain Tech™ shall not be liable for any damages arising out of or as a result of the use of the Personal Water Filtration Straw for any purpose other than that for which it is clearly intended. By using the Personal Water Filtration Straw, you tacitly agree to the terms and conditions of these safety instructions and the disclaimer.


Water Filtration FAQs

The brightly colored side is up. The dark grey side goes towards the ground.

This filtration straw has 3-filters. The first is a sediment filter that removes large water borne particles and increases filtration performance and longevity. The second filter is a hollow fiber membrane that removes 99.999% of bacteria, 99.997% of parasites, and reduces microplastics. The third filter is activated carbon which reduces bad odors and improves the taste of your water.

  • Brucella melitensis
  • Campylobacter jejuni
  • Francisella tularensis
  • Pseudomonas aeruginosa
  • Shigella
  • Staphylococcus aureus
  • Vibrio cholerae (Cholera)
  • Vibrio parahaemolyticus
  • Yersinia enterocolitica
  • Yersinia pestis
  • Enteropathogenic Escherichia coli (E. coli)
  • Haemophilus influenzae
  • Klebsiella pneumoniae
  • Legionella pneumophila
  • Mycobacterium tuberculosis
  • Mycoplasma pneumoniae
  • Burkholderia pseudomallei
  • Salmonella enterica
  • Salmonella typhi (Typhoid)
  • Streptococcus pneumoniae
  • Streptococcus pyogenes
  • Ascaris lumbricoides
  • Cryptosporidium spp.
  • Entamoeba histolytica
  • Giardia intestinalis
  • Naegleria gruberio
  • Schistosoma mansoni
  • Taenia saginata

No, the water filter does not filter out viruses or organisms smaller than .2 microns.

Yes. Do not use this water filter with seawater, brackish water, or chemically contaminated water such as mining tailing ponds, or near large agricultural operations.

No. We do not recommend doing this as the 3-stage filtration process may become damaged or contaminated.

No. Do not drink water that is at or above 60°C / 140°F through this straw.

Hypothetically you can. However to keep your water filtration straw's life span at its longest we suggest using the clearest and cleanest water possible as anything less will clog the filter more quickly.

Blow the air through the mouth piece (in the opposite of normal water flow).

You can use it to drink straight from a stream while outdoors, or use it when refilling your water bottle from a tap you may be unsure about. Just be sure to not use it with seawater, brackish water, or chemically contaminated water such as mining tailing ponds, or near large agricultural operations. 

Start by blowing air back through the mouthpiece (in the opposite direction of normal water flow). This will help remove the bulk of the any water left inside. Then give it a couple of quick, hard shakes and dab with a dry towel.

Note: There may be some water trapped inside the hollow fiber membrane. This is normal, and will drain out slowly over time if left standing in vertical position.

Only use clean tap or bottled water to clean the filter. Recommended to rinse with warm water, and wipe any dirt away with a clean sponge. You can remove the mouthpiece by unscrewing it counter-clockwise and clean it with warm water and dish soap. Do not allow soap of any kind to get inside the straw though. Do not use in dishwasher.

It is best to store the filter in a vertical (standing) position with a clean towel underneath to catch any trapped water than may drain out over time.

No. But it is recommended to keep them in a cool, dry place.

If you attempt to use your straw and you find yourself having the inability to draw water through it, this may indicate that the product has reached the end of its lifecycle.

If it is unused it will not expire. It can filter up to 1,000 gallons of water but this is dependent on how dirty the water you are sourcing is and how well the filter is maintained between uses.

Universal threading fits most standard single use plastic bottles. Simply remove the bottle cap and screw the bottom of the filter over the mouth piece of the bottle.

They are not recyclable. When their lifespan has ended they will need to be disposed of in the garbage.

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