A TON OF REASONS… here are a few…
Longest-Lasting
It doesn’t rust, it doesn’t tear apart, it bends rather than breaks, it expands and contracts with heat and cold, it's able to last 100+ years without falling apart, and can be recycled over and over and over.
Thick-Skinned
This isn’t weakling packaging! It’s thick and sturdy and because of that you can preserve your water from the Water Vapor Transmission Rate (WVTR) which occurs with store-bought bottled water or even aluminum pop cans where the seals can go bad from a little bumping or bending. If you leave store-bought bottled water on a shelf long-enough, for example, the water vaporizes through the pores of the bottle or the lid, and your water supply gets lower and lower. And, with pop cans, it doesn’t help that the carbon-dioxide or the nitrogen gas creates pressure from the inside out, causing the water to evaporate over time through bent seams or small holes that may form in the thin, unstable pop-tops.
FDA Approved
HDPE is actually one of the safest plastics and is FDA approved for potable water. Because of its high density nature, you don’t have the plastic chemicals leaching into the water like you would from a cheap plastic. That’s why HDPE is used for long-term water-storage tanks, such as those 55-gallon storage drums we’re familiar with.
Doesn’t Rust
This almost goes without saying, but if you leave a can of water out long enough it can rust from from the outside in and from the inside out. All it takes is for water to work itself into the seams of a metal can over time, and eventually the water seeps out.
Less Weak Points
The more seams, the more weak points, and the more chances of your water escaping over time or becoming contaminated. For example… A metal can has seams at the bottom (a very bad place for a seam!) and on the top. An aluminum pop can has seams around the top edge and a thin, weak, breakable indentation where it pops open. But, thick HDPE plastic bottles are seamless. There is only a hole at the top that is sealed by induction and then a tight lid keeps it all in place for decades without the unnecessary worry that water will eventually “seap” out of broken seams or weak points, like you find with pop cans.
Aluminum Free
There is a lot of debate on the internet about how unsafe aluminum may be in deodorant, cooking utensils, and even soda cans. Some people claim that Alzheimer's may even be linked to all the aluminum we are exposed to these days.
Water Proof
Because of the thickness and the density of the HDPE (“High-Density” Polyethylene), water doesn’t get out and water doesn’t get in!! Try soaking a can in water over time (especially salt water), and see what happens (not a good thing!). Being water proof means that your emergency water is protected from the corroding effects of basement flooding or even something as simple as humidity in the air.
BPA Free
Yes, importantly, it’s BPA Free. Some cans can’t claim the same simply because of the food-grade coating they use on the inside of the cans.
No Denting
One of the biggest flaws in cans are dents. When a can is dented, two bad things can happen. First, you create weak points or even cracks in the interior or exterior liners. This can cause rusting over time for metal cans, and can cause aluminum to enter the water with pop cans. Second, when you dent the bottom or top edges of a can, you have just weakened or maybe even ruined the seamed of the can. One small dent on the seam and your water can be ruined for life (which is bad if you plan on staying alive in an emergency situation). Dents aren’t an issue with sturdy HDPE bottles like Puravai uses.
Doesn’t Tear
Thick HDPE plastic doesn’t tear, so it is safer to put in a 72-hour kit or let it roll around in a trunk or anything else. These bottles are tough!
Reusable in Emergency Situations
A very beautiful thing about our HDPE bottles is that each comes with a reusable cap. That means in an emergency, Puravai bottles can be used again and again, drinking from the bottles and then refilling them where needed, like a canteen. In fact, we make our bottles from the same materials the U.S. military uses to make their canteens. This makes Puravai very unique in the prepackaged emergency water market.
Recyclable
HDPE plastics are one of the most recycled plastics in the world and can be used and reused again. Did you know that even your store-bought gallons of milk are made from HDPE?
It Can Float!
This is a big plus for emergency water, because you precious water supply is protected against flooding, rivers, lakes, or oceans. Emergency water that floats means an extra level of security in a variety of emergency situations and a great backup water supply for the U.S. Coast Guard and the Navy as they travel in the open waters.