I learned something new today: You can actually filter water with banana peels.
Turns out, banana peels bind with the heavy metals in water and remove them.
The simplest way to filter water with banana peels is to put a whole peel or two into your water (dry peels work better).
Let the peels soak for about 10 minutes. During that time, about 60% of the heavy metals will have bound to the peels and will be removed when you pull the peels out.
If you are more ambitious, you may want to cut the peels into small chunks or process them in a food processor before putting them into your water. In the case of the latter, you will need to pour the water through a coffee filter or cheese cloth to separate the small pieces of peel.
According to Survivopedia:
Studies show that you’ve achieved maximum results at ten minutes so there really isn’t any reason to let it sit any longer. After they’ve sat, simply use a clean fish net (if using powder) or a slotted spoon (if using chunks) to remove the peels. You can also just pour the water through a strainer or coffee filter to remove the peels or powder if you’re doing small quantities.
A surprising point that was discovered during research: the banana peels can be used as water filters up to 8 times and still be effective, so you’re getting some serious bang for your buck there.
Keep in mind that filtering heavy metals is different than filtering bacteria. Banana peels will remove heavy metals, but not bacteria.
So if you are drinking water from a contaminated or questionable source, you’ll still want to use a water filter or purification tablets prior to drinking the water.
Don’t be scared. Be prepared.