It is normal for your LifeStraw Home membrane microfilter to slow down over time. As the filter traps particles and contaminants, water flow may gradually decrease. This is expected with regular use and does not always mean the filter needs to be replaced right away.

A reduction in flow can also happen more quickly if the filter is not properly backwashed, cleaned, or stored. Trapped air bubbles, debris, mineral buildup, or allowing the membrane filter to dry out can all affect performance. It is important that the membrane microfilter stay hydrated and not dry out.

The membrane microfilter lasts up to 264 gallons, depending on water quality, turbidity, care, maintenance, and storage conditions.

Common Reasons Flow May Slow Down

Flow reduction may happen sooner if:

• The filter is not rinsed or cleaned regularly
• The filter has been used with cloudy or mineral heavy water
• Air bubbles are trapped in the membrane
• The membrane filter has dried out during storage
• Long term storage instructions were not followed

How to Help Restore Flow

Try these steps if your filter flow has slowed:

1. Rinse the Membrane Filter

Regular rinsing helps remove trapped debris and air pockets. We recommend rinsing the membrane microfilter during your weekly cleaning routine.

2. Rehydrate the Filter

If the membrane filter has dried out, it may take more effort to restore flow. Soaking it in clean water for 30 minutes may help rehydrate the membrane. In some cases, a filter that has fully dried out may need to be replaced.

3. Deep Clean if Needed

If the filter has been used with turbid water or water with high mineral content, a deeper cleaning may help improve flow.

4. Replace the Filter if Flow Does Not Return

If you have followed these steps and flow is still very slow or stopped, it may be time to replace the membrane microfilter.

Long Term Storage Instructions

Following the long term storage steps below can help prevent clogging and protect the membrane during periods of non use. Proper storage is one of the best ways to prevent the filter from drying out or becoming blocked over time.

1. Empty the System

Discard any remaining water from the pitcher or dispenser.

2. Remove the Carbon Filter

Take out the carbon filter and let it air dry for 30 minutes.

• If storing the system for longer than two months, discard the used carbon filter and replace it with a new one before using the system again.
• If storing short term, place the dry carbon filter in a sealed reusable container and store it in a cool, dry place.

3. Remove and Rinse the Membrane Filter

Remove the membrane microfilter and rinse it under clean water.

4. Clean the Pitcher or Dispenser

Wash the pitcher body and filter housing with soap and water. Let all parts dry completely before storing.

5. Disinfect the Membrane Filter

Mix 1/4 teaspoon (1.25 ml) of household bleach with 2 cups (473 ml) of clean water.

• Place the membrane filter in the solution for 10 minutes
• Remove and rinse thoroughly under clean water for 1 minute

6. Soak the Membrane Filter in Salt Solution

Mix 1 teaspoon (5 ml) of salt into 2 cups (473 ml) of clean water until fully dissolved.

• Place the membrane microfilter in the salt solution
• Store it fully submerged in a sealed container
• Keep the container in a cool, dry place

This helps keep the membrane hydrated during storage.

7. Store the Filters Separately

• Keep the membrane filter in the salt solution
• Store the dry carbon filter in a separate sealed container

8. Resume Use

When you are ready to use the system again:

• Remove the membrane filter from the salt solution and rinse it under clean water
• Reassemble the pitcher or dispenser with the filters
• Run two batches of water through the system
• Discard the first batch, as it may taste salty
• If stored longer than two months, use a new carbon filter

When Should I Replace the Membrane Microfilter?

The membrane microfilter lasts up to 264 gallons, but actual life will vary based on water quality and how the filter is cared for. If flow remains very slow after rinsing, rehydrating, and cleaning, it may be time to replace the filter.