All plastics used in the Sport Berkey® Filter Bottle are food-grade and BPA-free.

- The bottle is made of low-density polyethylene

- The cap is made of high-density polyethylene

- The straw is made of polypropylene.

To refresh the water in your Sport Berkey® Filter Bottle, you might think of placing it in the freezer for about twenty minutes. DON'T DO IT!!!

We strongly advise against letting the filtration elements freeze. We also advise against storing the elements (even unused ones) in very cold climates. Very cold or frozen water can expand inside the filter and consequently enlarge the pores, rendering the filtration ineffective. Whether the elements are unused or used and completely dried, a small amount of moisture could still remain inside the filter, especially in predominantly humid climates. This moisture could expand inside the element and render it unusable.

This recommendation applies to ALL our Berkey® filtration elements. Freezing your element and making it unusable will void your warranty coverage.

In certain situations, your Sport Berkey® Filter Bottle may be exposed to high temperatures. For example, if it remains in the trunk of your car in direct sunlight...

Therefore, you should remember that your filter bottle should not be subjected to temperatures above 46°C (115°F).

Yes, it is possible to put your Sport Berkey® Filter Bottle in the refrigerator, but under no circumstances should you let it freeze. The expansion of water within the filter could enlarge the pores and compromise its integrity, rendering it inoperative and voiding the warranty.

Your Sport Berkey® Filter Bottle has a lifespan of 50 years! When not using it for an extended period, remove the filter and fill the bottle with bleach at a ratio of one-quarter teaspoon per 2 liters of water, or a 50/50 mixture of 3% hydrogen peroxide. Rinse. Allow the parts to dry completely with the cap removed. Reassemble the bottle and, if possible, store it in an airtight bag. Do not allow the filter to freeze, do not place it in the microwave, and do not run hot water through it.