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We’ve been reviewing clean and sustainable products for a decade — these are our picks of easy-install water filters for safe and clean tap water.

Shopping for a water faucet filter may be one of the most adult purchases ever, but it gets us excited these days. That’s because water filters make it easier than ever to ensure we’re staying hydrated (unlimited access to H20). Plus, they help eliminate plastic water bottles and those big and bulky plastic water filters that occupy our fridge. (Hooray for extra snack room!)

Why consider a faucet filter for your tap water?

Water faucet filters can also eliminate toxins in our drinking water. Though tap water is generally safe for consumption (varying widely by location), it often contains bacteria alongside PFAS. According to the Illinois Department of Public Health, exposure to PFAS in contaminated drinking water may result in “increased cholesterol levels, changes in liver enzymes, hormone disruption, and increased risk for thyroid disease.” 

By installing a water filter on your faucet, you can minimize or even eliminate these contaminants and make your drinking water safe for consumption. Water filters can also improve the taste and mouthfeel of water by taking out impurities. Finally, water filters help reduce waste from plastic water bottles. They will likely save you money in the long run, especially if you’re used to drinking bottled water or have to replace a plastic water filter cartridge every few months (it adds up!). 

Our criteria:

Our editors have spent the last ten years using, researching, and reviewing clean and sustainable products in various categories. For this list, we chose brands offering water filters that are easy to install and filter out harmful chemicals while preserving the healthy minerals you need.

  • EASY INSTALL | These water filters come with clear and accessible installation instructions and customer support options for any questions about setting up your filter. 
  • CLEAN & EFFECTIVE | We’ve honed our list to include filters that remove PFAS and other harmful chemicals from drinking water. 
  • AFFORDABLE | Water filters can be pricey, but many of these options are affordable for rental homes, RVs, and travel. 

For more eco-friendly and nontoxic home upgrades, here are the best solar generators and the best air purifiers for clean air.

1. Waterdrop

Science backed
Second hand
Third party tested
Warranty offered

Best for | Clean and tankless
Features | Under-sink option, smart display faucet
Filtration | Reverse osmosis
Price starting at | $539

We’re starting with one of the more expensive options, but we promise it’s worth the investment! The Tankless Reverse Osmosis System from Waterdrop is an advanced water filtration system that features a tankless design, which is a major space saver — we can’t be the only ones always complaining about lack of kitchen storage—and having a tankless option means no secondary contamination (an issue with traditional tank-based systems). 

This multi-stage system eliminates every contaminant under the sun, including chlorine, heavy metals, fluoride, VOCs (volatile organic compounds), and PFAS (per- and poly-fluoroalkyl substances). With a flow rate of 600 gallons per day and smart features like a real-time TDS (total dissolved solids) monitoring display and filter life indicators, it’s one of our favorite choices for water filter systems. Best of all, no plumber is needed! With straightforward instructions, you can install it all on your own. Oh, and the company offers refurbished water filters at a fraction of the cost.

Customer Review I “As a retired scientist who examined the effects of a trace water contaminant on gene expression, I put a premium on clean water. I’m pleased with the Waterdrop tankless reverse osmosis system. They impressed me this time with the speed at which they sent me my replacement filters. I got them in less than a day and a half from the time I ordered them.” – Ray R. (Read all reviews)

2. A20 Water

Budget friendly
Science backed
Warranty offered

Best for | Renter-friendly
Features | Countertop faucet filter, travel filters
Filtration | Multi-stage filtration process (activated carbon, sediment filters)
Price starting at | $60+

Say hello to one of our favorite affordable filter companies for removing per- and polyfluoroalkyl substances (PFAS) from our drinking water in your rental: A20 Water. Using an advanced multi-stage filtration technology (including activated carbon and sediment filters), A20 sink filters reduce PFAS levels and eliminate chlorine, lead, mercury, pesticides, and volatile organic compounds (VOCs) for the purest and smoothest drinking water.

What we love most is how easy these filters are to install in temporary spaces (like an RV or rental apartment). They fit most standard faucets, and cartridges last up to six months. The high flow rates (around 0.5 to 2 gallons per minute, depending on the model) ensure a continuous supply of clean water without compromising pressure — you know, for when you’re trying to get out of the house and need to fill your Stanley fast! We love this choice for an effective and affordable solution to clean up your water, whether you’re traveling, renting, or just want something more affordable.

Customer Review I “I travel a lot to different areas and this unit produces great tasting water no matter where I am at. I highly recommend getting this unit for any traveling or vacation purposes!” – Wendy (Read all reviews)

3. PUR

Budget friendly
Science backed
Third party tested
Warranty offered

Best for | No tools required for installation
Features | Countertop faucet filter, travel filters
Filtration | Multi-stage filtration process (activated carbon, ion exchange materials)
Price starting at | $30+

Another rental-friendly and super affordable option: PUR is a brand we know and love from our college days for its water filter pitchers. However, the company makes faucet filtration systems, too, which can reduce PFAS and other contaminants such as chlorine, lead, mercury, and pesticides from the tap (the company is certified to reduce 70 contaminants). Using a multi-stage filtration process with activated carbon and ion exchange materials, toxins and impurities are captured and filtered for the cleanest and “PURest” drinking water around. No, really; the mineral core technology filters water over minerals for great taste! Plus, no tools are needed for installation. PUR filters attach directly to your faucet and have a sleek, modern design (we love the sage green). 

What are the specs, you ask? The filters have a lifespan of three months or 100 gallons (that’s 750 plastic water bottles, in case you’re wondering). User-friendly filter replacement indicators let you know when it’s time to swap out the filter, and a comprehensive warranty ensures quality and customer satisfaction for every sip. Hydration incoming!

Customer Review I “Recently watched a report of all the harmful chemicals that can be in ones tap water, and since getting bottled water can really add up, plus can be very wasteful, this faucet filter is very convenient and easy to use and install.” – PMG (Read all reviews)

4. Brita

Budget friendly
Science backed
Warranty offered

Best for | Affordable
Features | Countertop faucet filter, travel filters, easy-to-read manual
Filtration | Activated carbon and ion exchange
Price starting at | $17.99+

Brita is another brand that takes us back to our college days (RIP our plastic Brita pitchers). This time though, we’re buying a space-saving option—like the Advanced Water Filter Faucet—to rid our tap of the most harmful chemicals, including PFAS. 

The advanced filtration technology eliminates chlorine, lead, mercury, asbestos, and benzene while improving taste and odor. Activated carbon and ion exchange ensures thorough purification without compromising water flow, and every drop goes through multiple stages of filtration. What we love most, though, is the accessible and easy-to-follow instruction manual for installation! It’s easy to get clean drinking water without hassle or plumbing skills. Plus, the cost-effective replacement cartridges, warranty, and numerous customer ratings offer us peace of mind (and delicious water).

Customer Review  I “Love this product! Cost effective convenient, easy to use and change! I live in Central Florida, and this is the only way to drink water. Along with my BRITA pitcher, it’s cost effective, environmentally sound, and gives me healthy, delicious water every time! Not only would I recommend, I have!” – Vesta (Read all reviews)

5. Aquasana

Gives back
Science backed
Third party tested
Warranty offered

Best for | Preserving healthy minerals
Features | Reminilizer water filter, under sink
Filtration | Reverse osmosis, activated carbon, catalytic carbon, and ion exchange
Price starting at | $249+

For another under-sink water filter option, we love Aquasana, a company that offers advanced filtration systems designed to reduce contaminants commonly found in tap water. The advanced filtration technologies utilize activated carbon, catalytic carbon, and ion exchange to target and remove 90 contaminants (yes, 90!). These include fluoride, arsenic, chlorine, lead, PFOA/PFOS, cysts, microplastics, mercury, pesticides, herbicides, volatile organic compounds (VOCs), and more.

While a bit more of an investment, Aquasana’s water filter delivers a superior level of water purification, ensuring smooth, tasty, and odorless water that rivals that of a mountain spring. Don’t be intimidated by the fact that it goes under your sink, either! It’s easy to install and has clear instructions, a warranty, and third-party certifications. The brand even gives back to provide clean water to communities in need.

Ready for the best part? This remineralizing function restores beneficial minerals for healthier water and improves pH balance and water alkalinity.

Customer Review I “With the recent news of micro plastics, I began looking at RO systems. My chiropractor recommended Aquasana and I am thankful as it’s the only system I found that remineralizes the water. It is beautiful spout and despite the size and an extra large disposal, there is still ample room under the sink to store the essentials.” – Debster (Read all reviews)

6. ZeroWater

Budget friendly
Science backed
Third party tested
Warranty offered

Best for | Rigorously testing
Features | Rigorous third-party testing, extra long filter life, chrome finish
Filtration | Multi-stage filtration process, patented ion exchange technology
Price starting at | $44.99

Meet ZeroWater: A company that rigorously tests and certifies its water filters to meet NSF/ANSI standards for contaminant reduction. Not only are these filters renowned for their comprehensive filtration capabilities (we’re looking at you, PFAS), but the filters employ a multi-stage filtration process, including a patented ion exchange technology. Simply put, you can trust ZeroWater to clean up your tap water and remove chlorine, lead, mercury, chromium, herbicides, pesticides, and volatile organic compounds (VOCs) — to name a few. 

We love that these filters are long-lasting, making them a cost-effective solution for filtered water at work, at home, on the road, or wherever we choose to take our filter. As for additional certifications, this filtration system is WQA certified to reduce PFOA/PFOS, Chlorine, and Particulates Class I — all of which deliver better-tasting drinking water when removed. In addition, a third party has tested the water filtration system for up to 98% lead reduction.

Customer Review I “Excellent faucet water filter! Chlorine smelly water turns clean in an instant. Don’t need pitcher filter with this! Highly recommend.” – Kathy (Read all reviews)

7. ClearlyFiltered

Science backed
Third party tested
Warranty offered

Best for | Eliminates 232 contaminants 
Features | Easy to install, easy to replace filters
Filtration | Affinity® Filtration Technology
Price starting at | $495+

Drink clean, cook clean, live clean is the tagline behind ClearlyFiltered, the company behind this under-sink filter. It’s a literal champ when it comes to eliminating harmful chemicals and toxins found in our tap water — the company ensures its system excels at removing chlorine, lead, mercury, pesticides, herbicides, pharmaceuticals, volatile organic compounds (VOCs), and PFAS — and we love how smooth the water tastes afterward. Did we mention that ClearlyFiltered removes over 232 contaminants? That’s the most of any filter on our list. 

Other essential notes: it’s easy to install, comes with a warranty, and replacing the filters is a breeze. The Affinity® Filtration Technology is stronger, smarter, and more efficient than most Reverse Osmosis systems, too. It doesn’t remove or target the healthy minerals, ensuring you get a healthy glass of water that tastes great. Learn more by reading the company’s lab report.

Customer Review I “The install was super easy, and the water is so much better than what was coming out the tap. Highly recommend the product for everyone.” – Don (Read all reviews)