Water purification that removes fluoride and other things but leaves the minerals you need.
Reverse osmosis sytems will give you that, but you have to buy one with a 6th stage that puts minerals back in artificially.
It also begs the question, "why remove the calcium and magnesium just to put it back in again?"
That depends on what you think "pure water" actually is.
Many people want to buy a filter that takes everything out and just leaves the H2O.
While that may be great for car batteries, there are minerals in drinking water that are vital for health.
And that's why in places where desalination is used, such as ships at sea (commercial sized RO systems), people need to take mineral supplements.
A strict definition of "purified water" is that it is water with impurities removed, rather than water that has had everything removed.
A better, more healthy definition may be water that has had the unwanted impurities filtered out.
The Oyster Triple Water Purifier does just that in three stages.
First, fluoride is removed in a dedicated cartridge (around 93%).
The second stage is where chemicals that make your water taste and smell bitter and unpleasant, such as chlorine, are removed.
Along with nitrates, endocrine disruptors, certain volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), and many others.
The third stage is a sub micron pleated filter from Argonide. The NanoCeram® cartridge is a 0.2 micron high capacity electropositive filter medium that removes and reduces a whole spectrum of impurities and contaminants.
That nano filter was developed for NASA to recycle water in spacecraft for the astronauts. You can read more about that here - it's a bit technical, but very interesting.
Lots of things, so let's also compare Reverse Osmosis systems while we're at it:
Oyster Triple Water Purifier | RO | |||
Contaminants | NanoCeram | Carbon Block |
AA Fluoride Cartridge |
RO System |
---|---|---|---|---|
Bacteria | ✔ | ✔ | ||
Bromine | ✔ | |||
Chemical Reduction | ✔ | ✔ | ||
Chromium VI | ✔ | ✔ | ||
Colloids | ✔ | ✔ | ✔ | |
CTO | ✔ | |||
Cysts | ✔ | ✔ | ✔ | |
Dissolved Salts | ✔ | |||
Iodine | ✔ | |||
Endotoxins | ✔ | ✔ | ||
Ferric Iron | ✔ | ✔ | ||
Fluoride | ✔ | ✔ | ||
Lead | ✔ | ✔ | ||
Particulates | ✔ | ✔ | ✔ | |
Polysaccharides (TEP) | ✔ | ✔ | ||
Silica | ✔ | ✔ | ||
Trace Pharmaceuticals | ✔ | ✔ | ✔ | |
Virus | ✔ | ✔ | ||
VOC** | ✔ | ✔ | ✔ |
As you can see from the table above the combination of fluoride filter, carbon block, and NanoCeram® covers just about everything you'd want to remove, while also leaving health critical things your body requires.
Dissolved salts retained include calcium in carbonate form. If you've looked at the newer models of reverse osmosis (RO) systems you'll have seen that many of them now have an extra stage that adds calcium carbonate back into the filtered water. And then there's magnesium removed by RO too...
If it's desirable to have those minerals in the water why remove it in the first place?! By now, you may be seeing that over purifying water is not necessarily a good thing to do for your health.
You may also have noticed that this water purifier does not take out iodine. Did you know that there's an iodine deficiency problem in the UK? This is especially true of pregnant women, according to Independent Nurse, who need it for the proper neurological development of their babies. As it's vital for health it's best to leave it in your water.
RO systems have 5 or more cartridges need to be replaced regularly (between 6 months and 2 years, depending on the item).
Plus, RO filters discard most of the water that goes through them. Usually 70% to 80%, there are now some "eco" styled systems that waste 50%. While that's an improvement it's still a less ecologically sound method of purifying drinking water
With the Oyster Triple it's unlikely that you'll need to replace the 3 cartridges more than annually, although this does depend on the volume of water your houshold uses.
There's no waste water at all, and no electricity supply required to make the system work.
Installation is simple - unfiltered water goes in on one side and filtered water comes out of the other - no need for a drain. And once it's fitted, you can carry out the filter cartridge change over yourself.
All in all this water purifier is the smartest way to get the highly improved water quality you want.
* Occasionally Watts components may be replaced with other high quality items as a result of unexpected supply chain issues. This does not affect the quality of the product or its function. Brassware and other plumbing accessories are sourced from UK suppliers.
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