Water Filter Material Certifications & Water Filter Tests
We suggest you read this before the test results pages.

We provide a number of certifications and water filter tests results on the filter material and the filters we sell.  We would like you to understand however, that an over-reliance on these – from us or anybody – is a mistake.

Tips for Water Filters

Water chemistry is very complex.  Water testing is even more so.  Tests will give you a sense of things, but if you test the same water three times, you will get some variance in results.  This is especially true with fluoride.

Some of the very best filter materials unfortunately seem to make it even harder to get accurate test results. That is particularly true as regards getting accurate fluoride removal results. False positive results do happen. That’s not a good reason for us not to use the very best filter materials.

Certifications confirm that the media will reduce the contaminant in question.  The filters use only certified materials and the best materials.  Certifications tell you that nothing harmful is released into the water.  That’s of value.

We are happy to answer your questions.  It would be great if you first reviewed the information under Education/Water Filters, and under specific products, as nearly every question is addressed there.  By doing so you will learn about water issues, water filters, and Friends of Water.  One thing we don’t do is compare our filters with other specific brands and models for you.  We let others tell you about their filters.  We’ll tell you about ours.  Not only are we disinterested in ‘dueling filters’ but there is no way we could keep up with the hundreds of options available.  Very few suppliers provide all the information that we do, making it hard to really know how they work and how well they work anyway.

We  are confident that our whole house filters and kitchen canister filters are the best and the best value. We handle a couple of types of shower filters because there are a couple that work really well.  We only offer one line of kitchen canister and whole house filters because we’ve never found others that are as good; although we have been asked to sell other brands.  One of the key reasons we find these the best is patent-processed kdf.

Check Water Filter test results and certificates


The following comments reflect what we feel is far more important than lab test results.  These are just examples.  The point is that the filters we sell remove the contaminants and leave healthy natural water. The result is improved health.  Please read the following. 

From a Naturopath:

“I see many clients with the worst of the worst health situations. They come to me because traditional medical methods do not work for them due to the synthetic nature. We support the body so the body can fix itself and see great recovery of all of them.

“We have found many discrepancies with Reverse Osmosis water, however, many clients with the most unhealthy systems come to me, specifically the children with FPIES (Food Protein-Induced Enterocolitis Syndrome – roughly stated they’re allergic to the protein in food). These clients thrive on Friends Of Water filter systems.  I do know your system doesn’t change the molecular structure of water in a harmful manner while it removes the fluorine (in addition to other contaminants)- which is detrimental to their systems.

“….for example one FPIES child who is on a very strict and controlled GAPS diet did nothing else but switch to a Friends of Water filter and immediately saw massive changes. When she urinated the bathroom smelled so bad the mom nearly vomited. The speculation is once you stop putting the toxins in, specifically the fluorine, the toxins can be flushed out from your body.”

Becky Plotner, ND, traditional naturopath, CGP, D.PSc

From a customer with hyperthyroidism:

“…. about three months after [our Friends of Water filter] was installed we went on a family trip to go zip-lining. It turns out it wasn’t just zip-lining but a very intense obstacle course that you had to pass through first. I knew from my thyroid history that anytime I pushed myself that hard physically, I would be sick with flu-like symptoms within a couple days afterward. So we returned home, and I braced myself for the coming sick-time… but it never came! This “exercise causes sickness” had been repeated so many times over the past several years, you could literally set a watch to it, but now nothing! I had done intense exercise, and was not feeling any after effects at all!”                                      Robin

Get yourself kitchen or whole-house filters now that work well on all the categories of contaminants.  That way you are protected from the unexpected.  Make sure that if you have fluoride and/or chloramines, the filter you get works on that.

Sorry, we can’t promise perfection. We do promise the

  • best filter materials
  • great filtration
  • top support.

Friends of Water is happy to help you get the best filter for your water.  Please read product reviews on our site – on any of the filters.  They are all variants of the same basic filters, adapted to suit specific needs.  All the reviews speak to the quality of the products and service.


Checkout Certificates of Water filters

Water Filter Tests

Lalaan & Timothy, Founders


Friends of Water is a family-owned and family-run business founded in January 2006. We work to save water, filter water and celebrate water.

  • In Business for 19 years
  • Free shipping on orders above $250.
  • All our products have a 90-day return warranty in addition to manufacturer guarantees. Return any purchase within 90 days for a full refund.
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