Quick Answer
You can boil water in a plastic bottle in emergencies, but only if you use the right type of plastic and follow specific guidelines to avoid damaging the bottle.
Choosing the Right Plastic Bottle
When selecting a plastic bottle for boiling water, look for one made from PET (Polyethylene Terephthalate) or HDPE (High-Density Polyethylene). These materials are more resistant to heat than other types of plastic. Avoid using bottles made from PVC, PE, or PP, as they can melt or warp when exposed to heat.
Preparing the Bottle for Boiling
To ensure your plastic bottle can withstand boiling water, you need to prepare it first. Fill the bottle about 1/4 full with cold water and then place it in boiling water for a few minutes. This process is called “pre-heating” or “tempering” the bottle. This step helps to prevent the bottle from cracking or bursting when you add more water.
Boiling Water in the Plastic Bottle
Once your bottle is pre-heated, you can fill it with cold water and place it in boiling water for 1-3 minutes, depending on the altitude and desired level of purification. Make sure the water is at a rolling boil before adding the plastic bottle. To enhance purification, you can add a few drops of bleach to the water before boiling it. After boiling, let the water cool before drinking it. Always check the water for any visible signs of contamination before consuming it, even if you’ve boiled it.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.
