Independently Tested

Do Kirkland Water Filters Remove Fluoride?

It’s time to focus on Costco’s brand and ask, do Kirkland water filters remove fluoride?

Considering how great Costco is, I’m hopeful their filter will help us avoid fluoride’s health effects.

And to figure this out, I bought a Kirkland filter and tested it with a fluoride meter.

NOTE: Truth About Fluoride is reader-supported. When you buy through links on the site, I may earn a commission (every product is bought, tested & used by myself. With only the best being recommended)

Do Kirkland Water Filters Remove Fluoride?

kirkland water filter pitcher

Costco has very high standards but one look at their filter tells me the chances of it filtering fluoride is very low.

Mainly because the Kirkland filters look like the filters sold by Brita. Which when tested, were NOT able to remove any fluoride.

But maybe it’s different with Kirkland filters

So let’s test one and find out, starting with testing the tap water for fluoride…

tap water tested for fluoride, 0.6 ppm result

According to the fluoride meter, the tap water contains 0.6 ppm of fluoride.

Allowing us to know the fluoride levels before filtering.

Which means it’s time to test the water filtered by the Kirkland filter.

kirkland water filter pitcher tested for fluoride, 0.6 ppm result

So do Kirkland water filters remove fluoride?

According to the fluoride meter, Kirkland water filters do NOT remove fluoride. As fluoride levels were 0.6 ppm before filtering and 0.6 ppm after filtering.

Which is quite shocking as usually Costco products go above and beyond.

So I’ll just cut straight to the point, if you’re looking for a pitcher that CAN remove fluoride, the best choice out of all the brands I’ve tested would have to be Clearly Filtered (link to their website).

clearly filtered water filter pitcher

Note: if you plan on buying the pitcher, you should buy from Clearly Filtered (link to their website) and not Amazon. The price you pay will be cheaper and shipping time is the exact same if not faster through Clearly Filtered.

I say this because not only does it remove ALL fluoride but it filters the most amount of water contaminants and lasts the longest out of any brand, easily making it the best water filter pitcher on the market.

Plus there are many brands that lie about their filters removing fluoride. For example, there’s a popular filter from Europe called Klar, which in do Klar water filters remove fluoride – claimed to remove 90% of fluoride but my test results only showed 20% removal.

Now before you grab yourself a brand new filter, here’s one last thing to keep in mind…

Other Water Filters That CAN Remove Fluoride?

Finding a quality water filter is hard.

Especially one that can remove fluoride.

And not only that, many brands lie about their water filters being able to remove fluoride.

Now to help you avoid being tricked, I’ve taken the fluoride test results on 33+ water filters and put them all together.

So with these results you’ll be able to check if a filter can remove fluoride, before buying it.

And all you have to do is enter your email below and I’ll send you the test results right away.

Enter your email below to receive fluoride test results on 41+ water filters + my top picks!

water filters

In fact, once you get the email, you’ll see that the most popular water filters sold on Amazon actually have no effect on fluoride.

Yet some are sold and known to be the best “fluoride” filters… makes no sense.

While for those that are unsure which type of filter to get, you’ll be happy to hear, I’ve narrowed down all the options into the 3 best water filters for fluoride (link to article with all 3 filters and a guide to help you choose the right one).

Which means there’s 0% you get fooled into buying a filter that does NOT filter fluoride.

Something not many people can say.

Anyways, there you have it, the truth about fluoride in regards to Costco’s Kirkland water filters.


If you enjoyed this article, consider helping expose the truth about fluoride by sharing this article with your friends and family, using the sharing buttons below! Thousands of people have no clue their Kirkland water filters are good for nothing.

Casey J Krol

Casey J Krol

The guy exposing the truth about fluoride, one great article at a time. Now if you’d like to support what I do, click the “donate” button below. While for any questions, use the other buttons to get in touch with me (IG or Twitter). Better yet, sign up with your email on the website and get access to my personal email.

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