LifeStraw Go Series | My LifeStraw Go Series water bottle is slow or clogged.Updated 15 minutes ago

Follow these steps if you are experiencing clogging or difficulty sipping before the end of your filter’s life. This can happen from trapped air, debris buildup, or cleaning and storage issues. One of the best ways to prevent clogging is to follow the long term storage steps at the end, which helps keep the membrane from drying out or becoming blocked during periods of non use. If your filter has been stored dry for a long time, go directly to the Overnight Soak and Long Term Storage steps.

Troubleshooting for slow flow or clogging

1. Air valve check
   Check the umbrella valve: this is the small, clear silicone piece on the inner side of the main cap where the filter connects. If it is dirty or clogged, air cannot pass through and sipping becomes difficult. Remove the valve, rinse both the valve and the cap thoroughly, then reassemble.

2. Basic backwash
   Backwash the filter by taking a few sips through the mouthpiece, then blowing firmly back through the mouthpiece to push water back out through the membrane into the bottle. Repeat several times to help clear debris from the membrane.

3. Overnight soak and deep clean
   Remove the carbon filter first.
   Mix 1 quarter teaspoon household bleach with 2 cups (0.5 L) clean water.
   Pour the solution into the bottle, close the lid, and let it soak overnight.
   Empty the bottle, then rinse with clean water and shake the bottle to flush the system.
   Rinse again as needed until there is no bleach smell or taste.

Optional mineral scale soak (membrane only, not carbon)
If you suspect mineral buildup, you can use vinegar to help remove iron and lime scale.
Mix 1 part white vinegar with 4 parts clean water.
Flush the solution through the membrane filter only.
Rinse and backwash thoroughly afterward to remove any vinegar residue.
Note: Vinegar is not effective for mold removal.

Important note about dried out filters
LifeStraw membrane microfilters are designed for long lasting use, but they need proper storage. If a membrane filter dries out completely for an extended period, the membrane can be difficult to rehydrate and full flow may not return. If your filter remains clogged after soaking and flushing, it may no longer be usable.

Long term storage and care for the Go Series Bottle or Tumbler

Before storing
Store the membrane filter in a salt or saline solution when not in use. This helps prevent mold and algae growth and keeps the membrane hydrated for better flow when you start using it again.
Important: Do not store saltwater in stainless steel bottles or tumblers because it can cause rust. Use a non metal container or sealed bag for storage, or use the method below only when appropriate for your bottle type.

Step by step

1. Remove the carbon filter
   Remove the carbon filter, let it air dry for 30 minutes, then store it in a sealed bag or reusable container in a cool, dry place.

2. Disinfect the membrane filter
   Mix 1 quarter teaspoon household bleach with 2 cups (0.5 L) clean water.
   Pour the solution into the bottle or a clean container, close the lid when filled, and let stand for 5 minutes.
   For deeper cleaning, you may let it sit longer, then rinse very thoroughly.
   Rinse at least twice with clean water, shaking for 30 seconds each time.
   Blow through the mouthpiece to help clear any remaining water.

3. Immerse in salt solution
   Mix 1 teaspoon salt with 0.5 L water in a non metal container or sealed bag and dissolve.
   Place the membrane filter into the salt solution and seal.
   If you are using the bottle method, fill the bottle halfway with water, add 1 teaspoon salt, dissolve, then attach the lid with the membrane filter still installed and tighten.
   Reminder: Do not use saltwater inside stainless steel bottles or tumblers.

4. Store
   Store the sealed saltwater plus membrane filter in a cool, dry place.
   Store the carbon filter separately in a sealed container.

Before using again
Reinstall the membrane filter and reinsert the carbon filter.
Discard the saltwater.
Fill the bottle and discard the first few sips if they taste salty.
If stored for 3 months or more, replace the carbon filter.

Quick tip
If you will not be using your bottle often, store the membrane filter separately. Leaving it damp inside the bottle can lead to mold, even if it looks dry.

Helpful videos
How to Set up Your LifeStraw Go Series Water Filter or Tumbler

How to Store Your LifeStraw Go Series Bottle or Tumbler Long Term

How to Deep Clean Your LifeStraw Go Series Bottle or Tumbler

For more details, visit the Go Series Product Page.