Is It Safe to Store Water in a Reused Plastic Bottle?

Reusing plastic water bottles can have a positive impact on the environment but carries certain risks. Proper handling and storage are essential to ensure the safety and quality of the water.

Understanding the Risks

Plastic water bottles are designed for single use, not for repeated use, as they can leach harmful chemicals such as BPA (Bisphenol A) into the water over time. BPA is a chemical used during the manufacturing of certain plastics and has been linked to several health issues. Additionally, reusing plastic bottles increases the risk of bacterial contamination, which can lead to illnesses. Proper handling and cleaning of plastic bottles are crucial to minimize these risks.

Storing Water Safely

If you decide to reuse a plastic water bottle, it is important to follow these guidelines to ensure the water is safe to drink:

Clean the Bottle Thoroughly: Rinse the bottle with soap and water, and allow it to air dry completely before storing water. Disinfect Regularly: Sterilize the bottle with boiling water or a mixture of bleach and water (1 part bleach to 9 parts water). Let the bottle air dry after disinfection. Check for Expiration Dates: Avoid storing water that is past its labeled expiration date. While PETE plastic can last a few years, other plastics may degrade faster and allow harmful substances to leach into the water. Consider New Containers: For long-term water storage, consider using glass containers or dedicated water storage bottles that are designed for this purpose. Bottles Previously Used for Other Substances: Avoid reusing bottles that were previously used to carry toxic substances like gasoline or pesticides, as these substances can leave residues that cannot be fully washed out.

Water Storage Lifespan

The lifespan of stored water depends on several factors:

Type of Plastic: PETE plastic, commonly used for soda bottles, can last a few years if properly cleaned and disinfected. However, other plastics are more permeable and may degrade faster, leading to chemical leaching. Storage Conditions: Properly sealed bottles stored in cool, dry places will maintain water quality longer than those stored in warm or humid environments. Water Source: Tap water, which contains addition chemicals, will have a shorter lifespan than bottled water or distilled water. Expiration Date: Pay attention to the expiration date on the bottle, which indicates the end of the bottle’s useful life, not the water's. Tap water stored in a lidded bottle will generally be safe for about 6 months.

Alternative Storage Options

While reusing plastic bottles can be convenient, glass containers offer a safer and more durable option for long-term water storage. Glass bottles are impermeable and do not break down over time, effectively protecting the water from contamination and chemical leaching.

For environmental reasons and safety, it is recommended to:

Use Durable Containers: Choose containers made of durable materials such as stainless steel or glass. Avoid Plastic Bottles: Minimize the use of plastic bottles, especially for long-term storage. Invest in Reusable Containers: Utilize refillable water bottles specifically designed for safe and healthy storage.

Choosing these alternatives can help reduce environmental impact and ensure your water is safe and clean.