I hate to break it to you, but the tap water you’re soaking in when you take a bath is likely not filtered whatsoever. It’s totally safe, but it may have impurities in it that can irritate skin (especially for babies and kids) and dry out hair, like chlorine, chloramine and hard water minerals. That’s where a bath filter comes in. Like filtered showerheads, bath filters remove impurities as water comes out of the spout, so by the time it makes its way into your tub, it’s more purified.I’ve been testing bath filters for over a month, have done extensive research about them and talked to experts about how (and if) they really work. Find out everything you need to know — including which models I recommend — below.Want more from Jattvibe Selected? Sign up for our newsletter, The Selection, and shop smarter.What are bath filters?Bath filters are exactly what they sound like: filters for bath water. They’re point of use filters, which means they treat water directly at the fixture, says Deon Marecheau, a Thumbtack pro and the owner of Antillean Restoration. As water comes out of the tub spout, it passes through the materials inside the filter (a.k.a. filter media), which traps impurities like sediments, minerals, chlorine and odors. Then, by the time the water gets to you, it’s in its most purified state.In my experience, bath filters are much easier to install compared to shower filters — there’s absolutely no plumbing or home improvement experience necessary. In fact, you don’t even need to replace your tub spout to use bath filters. You simply slide them over or hang them from your spout so they’re positioned right underneath water as it comes out.The best bath filters of 2026I tested all of the bath filters I recommend below to share my first-hand experiences with them. They’re designed to fit most standard bath spouts across shapes and sizes, according to the brands. Water comes out of my spout at about the same rate with each of these filters attached as without — I haven’t noticed that it’s taken longer to fill up my tub since I’ve installed either of them.The bath filters included on my list come with one pre-installed filter (you have to buy replacements after a certain period of time) and all of the parts required for installation. To back performance claims, each brand either provides third-party testing data online or sent it to me via email when I requested it. I’m testing bath filters on an ongoing basis, so I’ll continue updating this list with more options.Best for familiesFilter media: activated carbon, calcium sulfite, copper-zinc | Filter lifespan: 90 days | Price of replacement filters: $37 per filter without subscription, $26 with subscription | Finish options: 6What we likeBuilt-in temperature indicatorSoft silicone exteriorCan leave on once installedSomething to noteCovers entire tub spoutFinishes don’t match hardwareVery noticeable in tubI hadn’t heard of or tried bath filters prior to Canopy’s, and when mine arrived, I was pleasantly surprised by how easy it was to install. Unlike filtered showerheads, I didn’t need to take off my tub spout to install it — I just slipped an attachment band (which looks like a thick, wide rubber band) over my spout, slid the filter over it and made sure the opening was directly underneath the area where water comes out. The installation process took less than a minute and the included directions were very clear.Canopy’s Bath Tub Filter completely covers your tub spout, which is great for those with kids — the soft silicone exterior protects them from bumping their heads on a hard metal fixture.Courtesy Zoe MalinAnyone can use Canopy’s bath filter, but it’s designed with features that tailor it to kids’ needs. For example, the filter is made from a soft silicone material and it completely covers the spout, protecting kids from bumping their head on the hard metal. It also has a built-in temperature indicator on the side that turns red when water is too hot, signaling that it might be uncomfortable for kids’ skin. I babysit for a handful of families who own Canopy’s bath filter because they have young children, but as an adult who uses it in my home, it doesn’t feel like it’s “for kids” — it has an universal appeal, in my opinion.Canopy’s Bath Filter slides onto my spout in seconds, so I could take it off and only install it as needed. I find it easier to leave on, though, and that seems to be what it’s designed for. The filter is easy to replace, too. There are finger tabs on each cartridge, which I pull down on to pop it out before adding a new one. Without the filter inside, the entire silicone fixture is top-rack dishwasher-safe so you can give it a deep clean.Best to use as neededFilter media: 12-sage system including sand, stainless steel mesh, cotton, calcium sulfite, redox, activated carbon | Filter lifespan: 30 baths | Price of replacement filters: $19.99 | Finish options: 2What we likeEasy to hook on/off spoutSimple designHelpful accessories includedSomething to noteWater may leak around edgesNot at large retailersTru’s Bath Water Filter is somehow even more straightforward to install than Canopy’s. It comes with a hard plastic hook you attach to the spherical filter, letting you hang it on your tub spout, positioning it over the part where water comes out. The pull on your spout keeps the filter in place. If your spout doesn’t have a pull, the filter comes with a long flexible hook you attach to the filter instead of the hard one, and you wrap around the spout once to keep it in place. You also get a little funnel attachment you can add to the filter if your spout’s water flow is too large. The funnel helps direct the water into the filter.I hang Tru’s Bath Water Filter from my spout when I’m filling up my tub and take it off when I’m done so I don’t need to keep it out all the time.Courtesy Zoe MalinThat’s all there is to this filter. It doesn’t have any bells and whistles, and I appreciate the simplicity. I also like that Tru’s Bath Water Filter doesn’t cover my tub spout at all — I find that it’s best used as needed because of this. I hook it onto my spout when I’m filling up my tub and take it off when I’m just showering so I don’t have to keep it out all the time. To replace the filter, I screw open the fixture, take out the old filter, add a new one and screw it back together.How I tested bath filtersTo test bath filters, brands sent me models as courtesy samples. I installed them in my apartment’s bathroom and I used each filter for at least two weeks. After attaching a filter to my spout, I completely filled up my tub multiple times with warm water. I noted how easy the filters were to install, how they worked and whether I noticed any differences in how the filtered water impacted my hair and skin. I went through the process of taking filters out of each fixture and replacing them, too.My resultsI’ve tested bath filters for over a month so far, and I’m continuing to use them to evaluate my results. Right now, I haven’t experienced any noticeable changes to my hair or skin, but I don’t take baths daily. I use my filtered showerhead daily, however, and after installing it, I very quickly noticed that my skin and hair felt softer and less dry — if I used my bath filter daily, I have a feeling I’d have the same experience. Noticing results with bath filters isn’t incredibly important to me though. I simply like knowing that when I take a bath, the water I’m soaking in is more purified than it would be if I didn’t use a bath filter. That’s enough to make buying and using one worth it to me. How I picked the best bath filtersExperts recommend considering the following factors while shopping for bath filters, all of which I considered while testing them.Filter media: Filter media refers to the materials inside a filter that removes and holds onto contaminants as water passes through. The specific type of media dictates exactly what gets removed, and brands often make mixed-media filters to address various impurities. Some of the most common media inside bath filters are activated carbon, calcium sulfite, ceramic and copper-zinc, which reduce the presence of chlorine, chloramine, hard water minerals and odors in water that can impact your skin, hair and plumbing, experts told me. I only recommended mixed-media bath filters from brands that disclose exactly what’s inside.Certified claims: There aren’t any federal regulations around residential water filters, including bath filters. To verify that the one you buy actually works as the brand describes, Marecheau says it’s crucial to review third-party testing data that supports performance claims, which you may find on the brand’s website. If not, you can request a copy via email. Some brands, for example, test their filters against voluntary standards set by organizations like public health nonprofits — the National Sanitation Foundation (NSF) is a common one. I only recommended bath filters from brands that provide third-party testing data on their websites or emailed it to me when I requested it.Bath compatibility: Even if a bath filter is advertised as having “universal compatibility,” make sure the one you buy works with your spout by reviewing guidelines online. All of the bath filters I recommend are compatible with most standard bath spouts and come with all of the parts that help them attach.Replacement filters: Filters don’t last forever — eventually, they get clogged up with impurities and you have to replace them as recommended by the brand, says Marecheau. Because of this, it’s important to consider the cost of replacement filters and how easy they are to buy. Some brands have convenient subscription services that automatically send you a new filter when you’re scheduled to replace yours. An important note: Never use a filter that’s not specifically designed to put inside the exact bath filter you own, experts say. I included information about replacement cost and availability for the bath filters I recommend.Finish: Bath filters come in various finishes, letting you pick one that matches the hardware in your bathroom or lets you add a pop of color. All of the bath filters I recommend come in multiple finishes.Frequently asked questionsCan bath filters benefit your skin?Yes, bath filters benefit your skin by reducing the presence of impurities in tap water that can cause irritation and dryness, especially for people who have sensitive skin or vulnerable skin barriers, says Dr. Dendy Engelman, a double board-certified cosmetic dermatologist and Mohs surgeon at Shafer Clinic Fifth Avenue. They’re useful for everyone, but she says they tend to make the biggest difference for people who have conditions like eczema, psoriasis and rosacea.Tap water is typically treated with a small amount of chlorine or chloramine to kill germs, disinfecting it so it’s safe to drink, according to the Centers for Disease Control and Prevention. But when it comes to bathing, chlorine and chloramine can strip away some of the skin’s natural oils, potentially making it extra dry and sensitive, says Engelman. As for sediments and hard water minerals, they can leave behind a residue that makes skin care products harder to wash off. By using a bath filter, you decrease your exposure to these impurities, leading to healthier skin over time, says Engelman. But it’s only one part of your skin care routine — if you’re dealing with consistent dryness and irritation, consult your dermatologist.Can bath filters benefit your hair?Yes, bath filters can benefit your hair. High concentrations of chlorine, chloramine and hard water minerals in tap water can negatively impact the hair and scalp while you’re bathing, says Engelman. They often leave behind a residue that makes hair care products harder to wash away; create buildup that contributes to an itchy scalp; and cause hair to feel dull, brittle and weighed down. Bath filters can help prevent some of those problems regardless of hair type, but they’re especially helpful for those with color- and chemically-treated hair, as well as curly hair — these hair types tend to be more susceptible to dryness and mineral buildup, says Engelman. All that said, bath filters are a great addition to your hair care routine, but if you’re dealing with a persistent issue, consult a dermatologist or trichologist.Are bath filters beneficial for babies and kids?Yes, bath filters are beneficial for babies and kids, who have more delicate skin than adults, making them prone to dry skin and eczema, says Engelman. Reducing their exposure to impurities like chlorine, chloramine and hard water minerals with a bath filter can help decrease the potential for irritation. Engelman also recommends keeping water lukewarm, using gentle, fragrance-free cleansers and moisturizing babies’ and kids’ skin immediately after a bath to keep skin healthy. Is bath water filtered to begin with?No, the water that comes out of your bath’s spout, as well as every other faucet and showerhead in your home, is likely not filtered to begin with, says Marecheau. Here’s why:Your home gets its water from either a private well or a municipality (a public water supply). If you get water from a private well, water filtration is up to each individual homeowner. Municipalities, on the other hand, have to filter water to some degree to meet the Environmental Protection Agency’s Drinking Water Act requirements, which specify legal limits for over 90 contaminants. But by the time water makes its way through pipes and eventually comes out of your home’s fixtures, it can pick up contaminants.While water is not thoroughly filtered when you start filling up your tub, you can opt to filter it using point of use filters, which reduce impurities at the point water comes out, or point of entry filters, which reduce impurities as water enters your home’s pipes. They’re both effective, so choosing the right one for you depends on where you live. For example, you can install point of use filters, like filtered showerheads and bath filters, by yourself in any type of home. But point of entry filters, which need to be installed by professionals, only work for individual houses — if you installed them in an apartment building, they’d impact every unit’s water.Can bath filters soften hard water?No, bath filters can’t soften hard water, which is water that has higher-than-average levels of dissolved minerals like calcium and magnesium, says Marecheau. Softening hard water is a complicated process that involves an ion exchange, which basic bath filters can’t do. However, bath filters, depending on the type filter media they’re made with, can reduce the presence of these minerals in your water so they’re less likely to cause plumbing, skin and hair issues.What types of filter media are best for bath filters?There’s no “best” filter media. Each type removes something different from water, and often, filters are made with mixed media to address numerous impurities. Below are some of the most common types of filter media you’ll see in bath filters, according to experts.Activated carbon filters reduce odors and chlorine in water.Ceramic filters reduce dirt, debris and bacteria in water.Calcium sulfite filters reduce chloramine and chlorine in water.Vitamin C (ascorbic acid) filters reduce chloramine and chlorine in water.Copper-zinc filters reduce trace heavy metal minerals in water.To target the most highly concentrated impurities in your home’s water, Marechaeu recommends getting it professionally tested prior to shopping for a bath filter. At-home water test kits are available, but they’re prone to user error and not as accurate as those conducted by a professional.Do bath filters reduce flow rate?As long as they’re installed properly, bath filters shouldn’t significantly reduce flow rate, meaning the amount of water that passes through your fixture, says Marecheau. But if the filter’s opening is small, or if the filter is clogged and overdue for a replacement, it’s a possibility — that might result in it taking longer than usual for your tub to fill up with water. The best way to avoid reduced flow rate is to replace the disposable filter exactly as often as the brand recommends, says Marecheau.Meet our expertsAt Jattvibe Selected, we work with experts who have specialized knowledge and authority based on relevant training and/or experience. We also ensure that all expert advice and recommendations are made independently and with no undisclosed financial conflicts of interest.Deon Marecheau is a Thumbtack pro and the owner of Antillean Restoration.Dr. Dendy Engelman is a double board-certified cosmetic dermatologist and Mohs surgeon at Shafer Clinic Fifth Avenue. Why trust Jattvibe Selected?I’m a reporter at Jattvibe Selected who has extensively covered water filtration. I wrote our guide to filtered shower heads; I’ve tested and reviewed over a dozen shower, bath and sink filters; and I’ve talked to numerous home and medical experts about the topic. For this article, I interviewed two experts about bath filters and tested models to share my first-hand experience with them.Catch up on Jattvibe Selected’s in-depth coverage of tech and tools, wellness and more, and follow us on Facebook, Instagram, Twitter and TikTok to stay up to date.