7 water settings to adjust alkalinity (pH 3.0 - 11.5). Built-in carbon filter lasts up to a year (4,000 liters) and removes common pollutants found in water. Easy installation and small size fits nicely on kitchen counter. Outstanding customer service from a highly reputable company.
Water can taste worse after filtering depending on your source water. Some reviewers question health claims.
Loved for its “6-stage” technology that replaces essential minerals the other RO systems strip out. Water tastes as good as bottled water. Low TDS and ppm results as well as higher pH. Filter removes 99% of harmful contaminants, including lead and fluoride. Sophisticated, brushed nickel faucet.
Faucet might leal, and some say the alkaline machine makes water more acidic.
Better pH results (higher) than expensive machines. Reverse osmosis (RO) mineralizing purifier adds essential minerals back into the water that most reverse osmosis machines leave out. Can help with acid reflux and houseplant growth. Good customer service.
Installation is tricky for some. Minor complaints of leaking.
BPA free. Alkaline filter adds minerals to the water and makes drinkable between 7.3 and 8.5 pH level – some owners reported up to 10 pH. Foolproof installation. Mineralized water tastes smooth and refreshing.
Replacement filters are expensive and hard to change.
Water tastes great. Adds high purity calcium back to the water for an ideal pH. Comes with an attractive, chrome-finished faucet. Easy installation with great customer service for any troubleshooting. Glowing reviews of ppm dropping drastically after using this product.
Water comes out slow, and without much pressure, from the faucet.
We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.
Alkaline water machines have surged in popularity due to numerous claims of health benefits endorsed by athletes and celebrities. Detoxing, reduced body acidity, immune system support, weight loss, even anti-aging are among the advantages alkaline water may have over ordinary drinking water. It’s no surprise, then, that there are plenty of devices that can provide you with your daily dose of alkaline water, from simple pitchers to highly complex electronic machines.
Given the diversity and the features, it can be quite a challenge to understand which device does what and how much you ought to be paying. That’s where BestReviews comes in. Our testing facilities were developed to help buyers find the answers they need, and recently we’ve been looking at all the latest alkaline water machines.
The obvious point is that an alkaline water machine increases water’s normal alkaline level, taking drinking water from a pH of somewhere around 7 to a pH around the 8 or 9 suggested by many as a beneficial level. The machine does this by passing the water through a series of filters or a single filter with multiple elements. The chemicals in these filters both increase the water’s pH and change its properties as an antioxidant. The latter is done by reducing the oxidation reduction potential (ORP). Negative ORP figures show you the level of antioxidation
Electronic devices, usually called water ionizers, use filters but also pass an ionizing charge through the water via titanium electrodes. This allows them to not just create alkaline water but also acid water. We will look at just how strong it is and why you might want that.
Pitcher: The simplest device isn’t a machine but a drip-fed pitcher, much like a water purifier but with a more complex filter. These pitchers are relatively low cost and require nothing more than a regular filter change. The only drawback is that they may not make a significant difference if you have hard water. It might be worth a quick test of your existing supply.
Countertop filter: This attaches to your existing faucet, with a pipe that leads to one or two tall filter elements. A spout delivers alkaline water to your container. The faucet adapter has a simple lever to direct the flow through the filter as needed; if it’s not switched over, your faucet works as normal. You need to check the fitting type, however. These filters don’t usually work on sprinkler faucets or some designer models, though most makers offer a couple of options.
Under-sink filter: This is permanently plumbed under your sink. Similar systems are used for water purification, but alkaline models have an extra filter (six instead of five). An additional faucet is usually supplied, so you can run it separately from your normal supply. Once installed, you can pretty much forget about it. This type of filter is designed for DIY fitting, which is fairly straightforward because no electrical supply is needed. However, it does take up significant space, and if you’ve already got a garbage disposal under your sink, installation could be a challenge.
Water ionizer: This attaches to your faucet in much the same way as a countertop alkaline filter, but the similarity ends there. This requires a 110-volt feed, both for ionizing the water and lighting up the digital display. These machines do way more than just filter your water: they have a number of presets for different pH levels and can also have user-variable controls for pH and ORP. The major difference between these and other machines is they can produce slightly acidic water (for skin care, for example) and strongly acidic (for cleaning). Actual pH range varies from one machine to another, but it’s typically from a pH of 3 to a pH of 12. Some are also self-cleaning.
Note: Some alkaline water machines rely on constant water pressure (generally around 20 pounds per square inch), and are therefore not suitable for homes that use well water, if that pressure fluctuates.
The filters in alkaline water machines have a limited life no matter which type machine you buy. To get an overall picture of ongoing costs, you need to think about the price of replacement filters and how often you’ll need to replace it. The following is only a rough guide. The cleanliness of your water will affect how quickly the filter becomes clogged. Manufacturers give instructions so you know when a change is required.
Pitcher: Filters for alkaline water pitchers process up to a gallon and cost from $15 to $30.
Countertop: Filters for countertop models cost around $25 to $55. Some manufacturers claim each filter can process several hundred gallons, while others don’t quote quantity but say they will last “up to 12 months.”
Under-sink: Filters for under-sink models are more complex and usually come in packs rated for anywhere from 6 months to 3 years. Prices run from $55 to over $200, so it’s worth checking around. You don’t have to buy filters from the same maker as the machine, but it’s vital that they are compatible — there can be big differences.
Ionizer: Filters for water ionizers cost from $55 to $90 and last for somewhere between 1,000 and 1,300 gallons. Again, compatibility is very important.
Inexpensive: The cheapest alkaline water machines are drip-fed pitchers, which cost between $35 and $55. It’s worth checking filter costs, too. At the budget end, they can easily add 50% to your purchase.
Mid-range: Slender countertop filters range from about $80 to $110. Popular under-sink installations run from approximately $170 to $250, though if you’re uncomfortable doing basic plumbing, you may want to pay extra for professional installation.
Expensive: The versatility provided by plug-in countertop machines comes with a much greater price tag. Few cost less than $500, and the most expensive are a few bucks shy of $2,000.
Q. Can I make alkaline water without a machine?
A. You can. Things like baking soda, lemon, lime, and cucumber can all raise the pH of water when used in the right combinations, and there are a number of different recipes available. However, making it can be quite time-consuming, and unless you’re very careful, it’s difficult to reproduce the consistency a machine provides.
Q. Is ionized water the same as alkaline water?
A. Yes and no! Confusingly, you can have alkaline water, ionized water, ionized alkaline water, and even ionized acid water! Strictly speaking, ionization gives the hydrogen and oxygen atoms in any kind of water a tiny electrical charge. However, the term “water ionizer” is most often associated with alkaline water machines, so in this case it’s the same thing.
Q. Can alkaline water be harmful?
A. Your body is pretty good at adapting to changes in the pH of water — up to a point. It’s suggested that if you’re switching to alkaline water, you should introduce it slowly. Don’t just jump from ordinary water to alkaline in a day. However, if you have a kidney complaint or are taking kidney-related medication, increased alkalinity might impact your health. You should consult your physician before implementing any change in your diet.