5 Best Bathtub Water Filters Reviewed & Buyer’s Guide

by Jay | Updated on May 2nd, 2023

Ever thought about the quality of the water you bathe in? We’re all cautious about drinking unfiltered water, but what about our hair and skin?

Let’s dive into some of the top-rated bathtub water filters available TODAY. With a range of styles and features, you’re bound to find the perfect filter for your bathtub.

woman lifting his leg

CuZn BathCrystal Quest Santevia
Removes ChlorineYesYesYes
Safe for BabiesYesYesYes
Life Cycle20000 gallons2,000 to 2,500 gallons of filtration7,925 gallons

Review of the top 5 best bathtub water filters

Whether you’re after a globe design, a clip-in model, or a full-fledged water filter, these bathtub water filters have got you covered.

Their mission is simple: to filter out harmful minerals while occasionally reintroducing beneficial ones. Some might seem similar in appearance and function, but it’s up to you to find the one that fits you and your bathtub best.

CuZn Bath Ball Faucet Filter – NO. 1 TOP SELLER!

The CuZn Bath Ball Faucet Filter is our top pick. It’s easy to use, budget-friendly, and efficient.

This handy filter attaches to your bathtub faucet, reducing hard water and its associated problems that can affect your skin and hair.

With a lifespan of up to 12 months, the filter costs roughly $0.11 per day, making it both an excellent product and a great value for money.

It uses KDF-55 filtering technology, which purifies the water without stripping away beneficial minerals. Just wrap the rope around the faucet and tighten the bead for a snug fit.

Once you turn on the water, it’ll pass through the ball faucet filter, filling your tub with softer water. And don’t worry about overflow – the flow rate extender funnel ensures the ball won’t spill, no matter how fast you turn on the tap.

After using the CuZn Bath Ball Faucet Filter, you’ll notice a difference in your skin and hair. It alleviates dry, itchy, flaky skin, brittle hair, and even helps with lung and sinus irritations.

This filter is not only good for you but also for the environment. Once you’re done with it, the CuZn Bath Ball Faucet Filter can be recycled.

Need a new filter? Just replace the cartridge instead of buying an entirely new unit, saving you money and reducing waste.

A few things to consider: this filter may not work as effectively with hard water sources like well water. Some customers also reported minor discoloration in the filtered water after the first few uses, but don’t worry, that’s just the filter getting activated.

Just run water through it a few times, and you’ll be all set to enjoy the benefits of the CuZn Bath Ball Faucet Filter.

It’s highly rated on Amazon and recognized as one of the best water filters for bathtubs.

Crystal Quest Bath Ball Filter – OUR 2ND TOP PICK

The Crystal Quest Bath Ball Filter is another fantastic option. It’s similar in design to the CuZn filter but has a few unique features.

This filter efficiently removes harmful substances like chlorine, chloramines, VOCs, THMs, pesticides, sulfur, heavy metals, hydrogen sulfide, iron oxide, dirt, and other contaminants.

With a reversible filter that lasts up to a year, this product guarantees a pH-balanced bathing experience.

Just hang the ball over the faucet and let the water flow. There’s no need to tighten anything – the water pressure will keep everything in place.

One note of caution: to prevent overflow, try to maintain a flow rate of 4-5 gallons per minute. Using too much water too quickly could damage the unit.

You’ll love how this filter enhances your bathing experience. It removes toxic elements from your water, leaving you with healthier skin and hair.

Plus, you’ll notice less build-up in your bathtub after using it – it’s like having spring-quality water right at home.

Choose from white or chrome to match your bathroom decor. Some users reported wear and tear, including leaking and overflow, after repeated use. So, while it’s a top-notch bathtub filter, you might need to replace it a bit sooner than others on our list.

Santevia Organic Cotton Faucet Filter 

If you’re into organic products, you’ll love the Santevia Organic Cotton Faucet Filter.

This unique bag-style filter reduces chlorine while adding essential minerals like magnesium and zinc, leaving your hair, skin, and nails nourished.

When water flows through the bag, a loofah-like material acts as a filter.

Simply hang it over the faucet, turn on the water, and let it run over and through the bag for three to five minutes for optimal results. You can even leave it in the tub while you bathe.

This filter is perfect for babies, children, and those with sensitive skin. You can use it with bath soaps and oils without compromising its effectiveness. When you’re done, just rinse it off and hang it up to dry.

Keep in mind that this filter should be replaced every 1-2 months or after 100 baths. It primarily filters out chlorine, so if you need additional filtering, you might want to consider other options.

Despite its simple design, users have reported excellent results, particularly in treating skin conditions. Plus, it’s priced competitively, making this all-natural filter a great choice for those who prefer knowing exactly what’s in their filter.

Eleling Faucet Water Purifier – Non-US only

The Eleling Faucet Water Purifier is a versatile filter suitable for those outside the U.S.

This model attaches directly to your faucet and filters out a variety of contaminants, including sediment, chlorine, rust, and bacteria. It’s a great addition to your bathroom if you’re looking to improve the quality of your bathing water.

With three modes, the Eleling Faucet Water Purifier can adapt to your needs. It has a Purified Water mode, a Shower mode, and a Water Column mode. Just turn the knob to the desired mode before turning on your faucet.

This filter has a six-month lifespan, and replacing the cartridge is a breeze. However, keep in mind that it’s not designed to handle hot water, so it’s best used with cold or room-temperature water.

While it may not be available to everyone, those who can purchase the Eleling Faucet Water Purifier have praised it for its effectiveness and easy installation.

AquaBliss Shower Filter

Looking for a dual-purpose solution? Check out the AquaBliss Shower Filter! This versatile product offers the best of both worlds for showering and bathing. If you’re not keen on investing in two separate systems, this could be the perfect fit for you. It’s also featured on our best showerhead water softener list!

Ranked as Amazon’s number one bestseller in shower filters, the AquaBliss Shower Filter boasts over 18,000 reviews, with the majority being positively glowing. So, while it’s not a traditional bathtub filter, you can certainly get creative with it!

How about filling up your bathtub with filtered water straight from the shower? It’s a brilliant way to enjoy the clean, refreshing experience that everyone’s raving about!

As your water passes through this filter, 75% of the process is dedicated to filtration, while the remaining 25% focuses on rejuvenation. The water undergoes 15 stages of filtration, effectively removing chlorine, pesticides, pharmaceuticals, dirt, and odors, among other contaminants.

But that’s not all. This wonder filter also helps to control scale build-up, making cleaning a breeze. And the benefits extend to you as well! Expect smoother skin, stronger nails, and healthier hair after using this filter.

Plus, it balances the pH of your water and helps infuse beneficial minerals while eliminating harmful ones.

When it’s time to change the filter, it’s a breeze to swap out. Installation of the fixture is straightforward, too – some customers have even reported it taking less than 2 minutes!

Designed to fit most showers and adaptable to the quality of your home’s water, the AquaBliss Shower Filter offers additional filters to cater to your unique needs.

Customers have reported immediate improvements after installing this water filter, and an impressive 86% of four-to-five-star ratings back this up.

Being one of the best filters on the market, why not use it to fill up your bathtub? You’ll enjoy all the same fabulous benefits!

Why Should You Consider a Bathtub Water Filter?

Ever had a bath and emerged with dry skin or brittle hair? Well, hard water could be your unseen enemy. Bathing with hard water can often leave you with these and other pesky problems.

Now, think about this: approximately 60% of the daily chlorine intake for most people comes from showering or bathing in chlorinated water. However, chlorine doesn’t do your hair and skin any favors. Not to mention, bath water can also contain heavy metals and volatile organic compounds (VOCs).

By filtering your bath water, you can say goodbye to these harmful substances. The best part? The positive effects on your skin and hair will be noticeable almost instantly.

The Perks of Water Filters

Water filters offer an array of benefits, most of which are tied to your health. Here are some key reasons why having a water filter installed in your home is a great idea:

Bye-Bye Chlorinated Water

Your local tap water may contain chlorine and tiny amounts of lead. While these aren’t a big deal in minimal quantities, long-term exposure can raise health concerns. Water filters effectively remove various pollutants, but their star performance is in eradicating chlorine and lead, which are particularly hazardous for expectant mothers.

Bacterial Filtering

Contrary to popular belief, local tap water can contain traces of bacteria. Water filters work like a charm in ensuring these little nasties stay out of your bathing and drinking water. This doesn’t stop at bacteria; filters also help protect you from viruses and other potentially harmful chemicals found in the water supply.

Goodbye Hard Water

Hard water is simply water that’s high in mineral content. While it’s generally safe for your body, the calcium carbonate deposits it leaves in your bathroom can cause wear and tear over time. Water filters are great at keeping your bathroom squeaky clean by removing hard water.

Say Hello to Softer Skin

The high mineral content in tap water can dry out your skin rather quickly. Filtered water sweeps away these drying agents, leaving your skin less prone to dryness or irritation after your shower or bath.

Ease Lung and Sinus Discomfort

Exposure to the traces of chlorine and lead in tap water can be harsh on your lungs and sinuses, especially over a long period. Consistent use of purified water can soothe any lung or nasal irritation you might be experiencing due to unfiltered water.

A Penny Saved is a Penny Earned

Believe it or not, water filters can help you save money in the long run. They contribute to maintaining a clean bathroom and promoting excellent health in your household. While the initial cost of changing filters may seem steep, it’s a worthy investment. Over time, your bathroom and pipes won’t have to grapple with hard water deposits and other harmful compounds, reducing wear and tear and, in turn, repair costs.

How Do Bathtub Water Filters Work?

Ever wondered about the magic behind a bathtub water filter? Let’s dive in and see how these nifty devices operate.

The Science Behind the Clean

At its most basic, water passes through the filter, which is equipped with features to remove harmful minerals. As the water travels through the fixture, it gets progressively cleaner.

There are two main types of water filtration: physical filtration and chemical filtration. Physical filtration works like a kitchen strainer or colander. As water moves through the filter, a physical barrier captures and holds larger particles, allowing the water to flow through minus these elements.

Chemical filtration, on the other hand, utilizes chemical reactions to eliminate tiny contaminants that physical filters can’t catch.

The Journey of a Water Droplet

In a nutshell, here’s what happens:

  1. Physical filtration captures larger substances.
  2. Remaining impurities are trapped by activated carbon filters, with the carbon acting like a magnet for chemicals such as lead and other toxins.
  3. When water comes into contact with activated carbon, chemicals like chlorine are reduced.

The water that comes out the other end is safe and ready to be used.

Choosing the Best Bathtub Water Filter

When it comes to selecting a bathtub water filter, you’ll want to take a few things into consideration. Here’s a handy guide to help you navigate the features of some of the best bathtub water filters and what they mean for your decision.

Functionality: A Filter for Every Need

Are you looking for a multi-purpose filter? Or perhaps one specifically designed for bathtubs? Maybe a shower filter is all you need?

These are some common questions that come up when shopping for a bathtub water filter, and your answers can significantly influence your choice.

Conditions Treated: Targeted Solutions

A water filter can help mitigate some of the negative effects that hard water can have on your skin and hair. Are you hoping to combat brittle hair or soothe irritated skin? Dealing with inflamed eyes? Filtered water can provide relief. The specific conditions a filter can help with may vary based on the filter you choose.

Filtration: What’s Your Priority?

What’s the primary goal for your water filter? Are you mainly aiming to reduce chlorine? Or perhaps you’re keen on removing potentially harmful minerals? Maybe you’re looking for a filter that can add beneficial minerals back into the water?

Each filter operates differently, so it’s crucial to choose a filter that aligns with your specific needs.

Positive Outcomes: More than Just Filtering

Some filters do more than just remove harmful elements – they also add beneficial components to the water. This can enhance the performance of your bathwater and allow you to see positive results more quickly.

Color: A Matter of Aesthetics

While this may not be crucial for everyone, some filters come in a variety of colors. If you want your filter to blend seamlessly with your bathroom decor, you might want to consider the color of the filter.

Natural Ways to Reduce Pollutants in Bath Water

Wondering how to make your bath water even cleaner? Here are some handy natural methods to further reduce pollutants in your bath water.

1. Say “Yes” to Vitamin C

Vitamin C isn’t just great for your immune system – it can also work wonders in reducing toxins in your bath water. Most municipal water sources use chlorine to keep pathogens at bay. However, chlorine can react with organic matter to produce trihalomethanes (THMs), sometimes referred to as disinfection byproducts. Notably, chloroform, a known carcinogen, is one of the most common THMs.

Other byproducts include di- and trichloramine, which are produced when chloramine is used as a disinfectant. These chemicals can be harmful when ingested, inhaled, or applied to the skin.

While carbon block filters (typically used for drinking water) can remove chlorine, they’re not always practical for bath water. That’s where Vitamin C steps in! Vitamin C can neutralize both Chlorine and Chloramine (a blend of chlorine and ammonia often used in water treatment, and potentially even more harmful than Chlorine).

The two types of Vitamin C that are effective in neutralizing chlorine are:

  • Ascorbic Acid (Vitamin C)
  • Sodium Ascorbate (Vitamin C)

Just a teaspoon of either form should be enough to neutralize a tub of water. It’s best to let the powder sit in the bath for 2-5 minutes before hopping in to allow it to do its job. If you’re not a fan of adding powder to your bath each time, there’s a bath ball de-chlorinator that can do the trick and lasts for about 200 baths!

2. Embrace the Healing Powers of Clay

Healing clays, such as Bentonite Clay, can bind to heavy metals in the body and help remove them. The same process can happen externally, making clay a popular addition to detox baths.

Bentonite Clay has a unique ability to develop an “electrical charge” when wet. Upon contact with fluid, its electrical components change, giving it the ability to absorb toxins. Thus, it can absorb and remove toxins, heavy metals, pollutants, and chemicals.

Just note that when using Bentonite, you should avoid metal as it can reduce its effectiveness. I usually combine 2 teaspoons of Bentonite Clay with water in a glass container with a plastic lid and shake well. Once the chlorine is removed, I add this to the bath.

3. Soak Up the Benefits of Minerals and Salts

Magnesium is a crucial mineral for our bodies, but many of us don’t get enough due to reduced soil magnesium levels and the use of synthetic fertilizers. One of the easiest ways to up your magnesium intake is by adding these minerals to your bath water.

Research shows that magnesium and sulfate are both readily absorbed through the skin, making Epsom salt baths an easy and ideal way to enjoy the amazing health benefits. Magnesium plays a number of roles in the body including regulating the activity of over 325 enzymes, reducing inflammation, helping muscle and nerve function and helping to prevent artery hardening. Sulfates help improve the absorption of nutrients, flush toxins and help ease migraine headaches.

These simple, natural methods can help you reduce pollutants in your bath water, contributing to a healthier, more relaxing bath time. Give them a try and enjoy the benefits!


Most people only consider water filters for drinking water, and they are unaware that using hard water might have detrimental impacts on their health.

Now that we’ve looked at some of the finest bathtub filters and features, let’s look at some of the most frequently asked questions to help you choose the best water filter.

Is it possible to install a water filter in a bathtub?

For smoother skin, the bathtub filter securely removes chlorine, hypochlorous acid, filth & smells, and sediment from your bath water. It takes only a few minutes to install and is ready to use immediately.

What contaminants can bathtub water filters remove from water?

Water filters can remove chlorine, fluoride, bacteria, viruses, pollutants, and pesticides while adjusting the pH of the water.

What are the advantages of using a bathtub water filter?

Your skin will be less dry, your hair will look healthier, your eyes will be less irritated, and so on. These are only a few advantages of using a bathtub water filter. Just because you aren’t drinking it doesn’t mean you shouldn’t filter it!

Do I need to bathe babies and children in filtered water?

It is all up to you. The same advantages that adults enjoy will be extended to babies. Unfiltered water can cause skin irritation.

What is the lifespan of bathtub water filters?

Bathtub filters typically last between 3-6 months, depending on usage. However, because each instance will differ substantially based on the individual, it is better to verify the package or consult the manufacturer for a more accurate time frame. In addition, it is best to change your filter as soon as possible if it malfunctions.

Can I change the bathtub filters?

Each unit is unique. Some include replaceable filters, while others require purchasing an entirely new device. Therefore, examine each product thoroughly to ensure that you understand the requirements.

Is it easy to install the bathtub water filters?

Again, each device is unique; nevertheless, most of the water filters on this list are simple to install. They either slip over the faucet, filter running water, or clip on quickly.


While a bathtub water filter may appear a luxury to some, it is affordable. Investing in one of these filters makes perfect sense, given the men’s skin, hair, and overall health benefits.

The CuZn Bath Ball Faucet Filter, which we rated above as our top overall option, is the greatest bathtub filter we can locate. The pricing is not prohibitively expensive, and the reviews are generally favorable. So, if you’re looking for a tub filter, this is the one we recommend.


Jay is a health and wellness enthusiast with expertise in water quality and nutrition. As a knowledgeable advocate for holistic well-being, Jay successfully manages Type 2 Diabetes through informed lifestyle choices. Committed to sharing reliable and authoritative insights, Jay combines firsthand experience with a passion for enhancing health."