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The Best Alkaline-Water Filters on Amazon, According to Hyperenthusiastic Reviewers

Photo: Courtesy Retailer

We’ve written about lots of ways to drink clean water — including the best water-pitcher filters and a Japanese charcoal stick — but here, we’ve rounded up the best alkaline-water machines and filters, as praised by the most enthusiastic reviewers on Amazon.

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Best-rated alkaline-water filter


More than 1,600 reviewers give this alkaline-water pitcher five stars, and lots of them are pleasantly surprised by how much it improves the taste of their water. “I seriously thought all of these water purifiers were a waste of money and that it was just another false advertisement on supposedly making our water better,” one once-skeptical reviewer says. “Well, it proved me wrong like no other. The cover is a cheap plastic, but it is easy to fill. After I poured water from it in a glass I could see my sons face through the glass it was soooooo clear. No joke, it’s amazing.” Another reviewer says, “The water tastes like…..water. No chlorine or metallic taste. And no aftertaste.”

However, some reviewers have noted problems with the lid, but it’s fixed by installing it correctly. “It’s easy to fill, and if you make sure to attach the cover according to instructions — to the inner funnel where the filter rests, not to the pitcher itself — it will not leak.” This is far from a deal-breaker, though, and reviewers feel like they are getting a good deal going with this pitcher over a more expensive filtration system. “I was going to purchase an expensive alkalizing machine, I am so glad that I did not,” one writes. “This pitcher alkalizes my tap water in a few minutes, it is very reasonably priced, and it is easy to use.”

Best-rated (less expensive) alkaline-water filter

EHM Alkaline pH Water Filter Stick
$10 for 3

These alkaline-water sticks make it easy for reviewers to purify their water without the rigamarole of getting a new plastic pitcher, and it even lets them filter water while on the go. “Skip the travel mug with expensive inserts - just put one of these in your stainless water bottle, and enjoy alkaline water on the go,” one says. Another reviewer, who has been using them for several years, shows just how versatile it is: “I also put it into our coffee pot, our ice maker and keep 1 in my purse just in case I have to use bottled water.” In all situations, reviewers have seen an improvement in the taste and acidity their water, adding that this stick filters their water quickly. “I bought a pH meter (from Amazon), and measured the pH of my water after one hour,” one says. “I repeated the measuring several times, and consistently got 8.6.” Another says, “The filter stick brought the alkaline level of the water to 8.5 which is pretty good, that was after only 10 minutes.” Just like larger filters, these need to be replaced from time to time, but many say they are long-lasting. According to the description, “one stick can filter approximately 90 liters of water – in other words, if you drink about 3 liters per day it can last you up to 3 months.”

Best alkaline-water filter for travel

pH ON-THE-GO Alkaline Water Filter Pouch
$27 for 3

Reviewers give this alkaline-water-filter pouch top marks for being their on-the-go source for filtered water. One used it while on a two-week trip to London. “On a daily basis I filled up a bottle from the sink or kitchen and let it sit for 20-30 minutes and it very much improved the taste of the water,” they say. “As well as the pH level. I also had no issues going through the airports (X-ray machines) with these.” Another says, “I like that it is small so I can easily carry with me in my purse, as well as lasting long (16 gallons per pack), each filter comes with a resealable bag that I can use to transport.” Dozens also report that the taste of their water is improved. “It’s too soon to tell if there are health benefits, but the taste of the water is enough to make me a customer for life,” one user reports. “One example: I filed my bottle up at a gas station, and some of the flavoring came out with the water. I waited a few minutes, and all the flavor from the soda fountain water was GONE.” Those who have been using the filter longer have noticed the health benefits too, like one who writes, “Since I have started using my invigorated living bottle with the pH on the go sachets, my heartburn is no more.”

Best easy-to-install alkaline-water filter

More than 650 reviews give this alkaline-water system a five-star review, many because of how easy it is to set up. “My son installed our system and though having no experience with plumbing or setting up water systems he found the installation to be straight forward and the paper instructions well laid out and easy to understand,” one writes. “Everything needed was provided and there were no surprises.” Another, who had theirs professionally installed, says, “It took him approximately two hours, and was able to install the entire system with all of the parts provided.” They add, “He said that the instructions were well-written and easy to follow.” Reviewers also call out this filtered water’s superior taste. “The water from our private company where I am located routinely had a ‘off smell’ to it and large amounts of sediment,” one notes, but they continue, “After installation of the APEC RO system, the water is absolutely pristine! It tastes amazing and I am very glad I went with the Alkaline setup.” Another who tested the levels now is “leveling out at about 12-16ppm which is perfect and gives the ‘Fiji’ water smooth taste.”

Best alkaline-water filter with remineralization

“I’m a picky A, Double Snake, when it comes to the taste of my water,” one reviewer admits. Although they were “worried about the re-mineralization filters” in this system they still gave it a chance. “I could taste the difference between distilled water, pure RO water and this water,” they write, “But it was sooo mild I gave it a go. Now I love it.” As one user points out, “The real key feature here … is the cartridge that contains pebbles which add minerals to the water and naturally raises its pH, the same way in which water from a stream has a higher pH.” Another says, “My parents had RO water system when I grew up but only 5 Stage and did not add good minerals back in like this one does,” while another adds, “I love that it remineralizes the water so I don’t have to add pink salt or any drops to the water.”

Beyond tasting good, reviewers have actually tested their new water to prove that it’s not just a placebo effect. “I tested 245 ppm before installing and 24 ppm after so well worth the money for my family’s health. Plus it’s cheaper to buy filters once a year than to buy bottled water year-round.” One writes, “As far as contaminants in the water I compared this to an alkaline machine which are worth about $3,000 plus dollars, and the results I found for the price of this filtering system is far better and cheaper then an alkalizing machine.”

Best alkaline-water system with large holding tank

“Stop dealing with (stinky) faucet water and get yourself one,” one reviewer says of this alkaline-water filter. “The water tastes exactly like bottled water,” another user writes. “We couldn’t be happier with it. We use it wash our produce, cook, make tea/coffee, drink and provide clean water for our dogs who by the way drink every last drop from the bowl. The same couldn’t be said for just tap water.” Reviewers also praise this system for the volume of the tank and the water pressure it provides. “The tank fills and replenishes itself very quickly, compared to our old system, if you turn the faucet on and leave it on, it will take about five-plus minutes to empty the entire tank,” one writes. They add, “I use to run out of osmosis water when I used it to fill up a big pot of water for pasta but with this new system, I haven’t run out of water. It seems to have a good-size holding tank.” Another notes, “I haven’t had any issues with the speed of the water pumping or running out at all and the water tastes great.”

Best fast-flowing alkaline-water filter