Arsenic in drinking water is a serious problem that most people don’t think about — until it’s too late. It has no taste, smell, or color, so you could be drinking it every day without knowing. Over time, exposure can lead to skin problems and organ damage and even increase the risk of cancer.
The best way to remove arsenic from water is with reverse osmosis. This process forces water through a special membrane that traps arsenic and other harmful contaminants, leaving you with clean, safe water. However, some products claim to remove arsenic without reverse osmosis, and we’ve included some of them as well.
If you want real protection, though, a high-quality RO system is the way to go.
I’ve done the research and tested the top arsenic filters so you don’t have to. The filters on this list are effective, reliable, and built to last, making sure your water stays safe for you and your family.
Let’s dive in.
1. Moen Reverse Osmosis Water Filtration System: 9.60/10
- Removes 99% of arsenic
- $520.00
The Moen Reverse Osmosis Water Filtration System earns the top spot for its powerful four-stage filtration, removing 99% of arsenic along with heavy metals, pesticides, chlorine by-products, PFOAs, VOCs, and more. Its high-efficiency design ensures cleaner, safer drinking water straight from your tap.
Pros
Unfortunately, many municipal water supplies and private wells contain arsenic, along with other contaminants, such as heavy metals, pesticides, and chlorine by-products. If your water tests positive for arsenic, you need a reliable solution to protect your family.
That’s where the Moen Reverse Osmosis Water Filtration System comes in. This system removes 99% of arsenic and other harmful substances through its four-stage filtration process.
First, the sediment filter catches large particles and dirt, protecting the other filters from clogging. Next, the pre-carbon filter takes out chlorine, pesticides, VOCs, and other chemicals that affect taste and smell. The heart of the system is the reverse osmosis (RO) membrane, which removes heavy metals such as lead, mercury, iron, and aluminum, as well as 99% of arsenic and fluoride, making your water safe to drink. Finally, the post-carbon filter catches anything that made it through the first three stages, making sure it’s crystal clear and tastes great.
Beyond its filtration power, the Moen system is designed for efficiency and convenience. Unlike traditional RO systems that waste gallons of water for every gallon filtered, this system’s high-recovery membrane has a 1:1 waste ratio, making it one of the most environmentally friendly options available.
Plus, its low-profile design fits neatly under most sinks, so you get clean water without sacrificing storage space.
With a 3.2-gallon storage tank, you’ll always have fresh, filtered water on demand. The included Sip™ faucet makes it easy to access clean water for drinking and cooking. If you already have a faucet and don’t want to pay for one, no problem! You can get the same high-quality RO Moen system without the dedicated faucet.
Even better, installation is DIY-friendly with all necessary parts included, so you don’t need to hire a plumber. And when it’s time for maintenance, replacement filters are easy to find, with a subscription option to have them shipped every six months for hassle-free upkeep.
Built with NSF/ANSI-certified components and manufactured in the USA, the Moen system is both reliable and affordable. It’s reasonably priced, backed by a five-year warranty, a six-month risk-free guarantee, and free shipping in the US and Canada — it’s an investment in both your health and your wallet.
Why risk another sip of unfiltered water? Get the Moen Reverse Osmosis System today and start drinking water the way it should be — pure, safe, and worry-free. Visit the SpringWell website now to order your system and customize your bundle!
Cons
While the Moen Reverse Osmosis Water Filtration System is a great choice for removing arsenic and other contaminants, there are a few drawbacks to consider.
First, the filtration process can be slow. Unlike some other systems that deliver instant filtered water, reverse osmosis takes time. If you use a lot of water throughout the day, you might need to wait for the storage tank to refill.
Second, even with its efficient 1:1 water ratio, some water is wasted. Reverse osmosis systems send a portion of water down the drain during filtration. While this system is more efficient than traditional RO units, it may still be a concern in areas with water scarcity.
Another thing to keep in mind is the space requirement. The system includes a storage tank and multiple filters, so it needs room under your sink. If you have a small kitchen, fitting it in might be tricky.
Lastly, it removes beneficial minerals along with harmful contaminants. While this ensures the purest water possible, some people prefer to retain minerals, especially calcium and magnesium.
That said, these trade-offs are minor compared to the benefits of having safer, cleaner water at your fingertips.
Overall
Your water should hydrate you, not poison you. With the Moen Reverse Osmosis Water Filtration System, you’re investing in cleaner, safer water — and peace of mind. No more worrying about arsenic lurking in your glass. No more second-guessing what you’re giving your family.
With its unbeatable filtration, eco-friendly design, hassle-free maintenance, and five-year warranty, it’s the ultimate solution for clean, safe water.
Don’t wait until it’s too late! Protect your family’s health today by investing in the Moen Reverse Osmosis Water Filtration System.
2. Crystal Quest Arsenic Whole House Filter: 8.90/10
- Removes a wide variety of contaminants
- $3,684
The Crystal Quest Arsenic Whole House system is your next best option if you want arsenic permanently gone from your drinking water. You can pair this up with Crystal Quest’s brine water conditioner and SMART water filter to treat a wide range of pollutants.
Pros
Crystal Quest features a sediment prefilter that captures debris and silt. This is followed by a proprietary blend of iron oxide nanoparticles that have a high affinity for arsenic in water. The last step is a carbon filter that tackles pesticides, herbicides, and volatile organic carbon compounds, and an arsenic-reducing mineral tank.
If your water is a dirty concoction of various pollutants, you can further outfit your whole-house water filtration system with Crystal Quest’s SMART filters that can remove heavy metals, chlorine, and other inorganics. Or if you’ve microbial contamination, you can get its 13 GPM UV sterilizer.
This arsenic filter media will last 2–5 years depending on your water quality. The rest of the filters will need swapping every 12–18 months.
I like that Crystal Quest offers fiberglass tanks in addition to stainless-steel tanks. If you live in a particularly humid and hot area, you might need a fiberglass tank to prevent the formation of pinholes and rust.
Cons
This system is a bit high maintenance. You’ll have to keep up with regular filter changes and trust me, those replacements can really put a dent in your wallet.
I couldn’t find any test results or certification on the website, which is a big red flag.
Another issue is its slow flow rate. The maximum you can get out of the Crystal Quest arsenic filter is 13 GPM.
Lastly, this brand offers a one-year warranty, which is too short considering its hefty price tag.
Overall
Crystal Quest is a reliable unit when it comes to removing arsenic in your water. Although it’s a bit pricier, offers a short warranty, and requires maintenance, you can trust it to keep your water safe and healthy to consume.
3. US Water Systems Non-Electric Arsenic Filter
- Removes heavy metals
- $4,133.95
US Water Systems uses a selective ion-exchange resin that traps arsenic along with chromium, uranium, vanadium, sulfide, and silica. The filter has a high arsenic removal efficiency, but it’s more expensive than both Moen and Crystal Quest filters.
Pros
US Water System utilizes ResinTech’s ASM-10-HP arsenic-removing anion-exchange resin. The best part? It is Gold Seal Certified by the WAQ. The filter doesn’t need electricity or regular backwashing. Once it nears its expiration, you’ll need to replace it with new filter media.
One good thing about this resin is that although it targets other heavy metals, as well, it has the highest affinity toward arsenic.
I like that US Water Systems offers three variations in the flow rates. You can choose between 7 GPM, 15 GPM, and 20 GPM to suit your water needs.
If your water meets the conditions of no iron and manganese, TDS less than 1000 PPM, and hardness below 2 GPG, then this system can bring down 50 PPB arsenic to less than 10 PPB for 500,000 gallons of water.
Lastly, US Water Systems gives a lifetime warranty on its tank and five years of warranty on its head assembly.
Cons
This filter should only be applied when there is no iron or manganese in your water. If you have those pollutants, you might need to treat them first before removing arsenic.
Another drawback is its expensive price tag. Not many users can afford this system.
If you have arsenic III in your water, you might need to oxidize it to Arsenic V before the water passes through this filter.
Overall
US Water Systems’ whole-house filter works effectively against arsenic and other heavy metals in water. Maintenance won’t be a headache, but let’s be real, it’ll give your bank account a beating. If you’re up for splurging a whopping $4,133.95 on a whole-house system, then go for it.
4. US Water System Defender
Here’s another top-quality whole-house arsenic removal system by US Water Systems.
US Water Systems Defender is a whole-house reverse osmosis system that will effectively remove all forms of arsenic and any other toxic pollutants in your water, including microbes and heavy metals. This brand lets you choose between four models with varying flow rates ranging between 2000 GPD and 8000 GPD. And you can also get yourself a storage tank.
Defender’s RO filter is different from the rest on the market in a way that it’s 80% efficient and wastes only one gallon for every five gallons of filtered water.
It uses a multistage stainless-steel centrifugal pump that lasts many years and doesn’t need replacement every six months like other RO filters.
And lastly, US Water Systems offer a limited lifetime warranty on its tank and a two-year warranty on its components, which is decent.
The downside? It’s crazy expensive, costing over a whopping $8,163.31! If you happen to have that kind of money to spare, learn more about the Defender whole-house system.
5. Crystal Quest Big Blue Whole House Filter
Here’s a suggestion for folks who live in small houses or rentals and need something that works for one or two people. Priced at $535.36, Crystal Quest’s Big Blue filter features proprietary arsenic removal resin in the form of iron oxide nanoparticles.
The filter is equipped with 4–6 GPM, which is decent enough for one to two bathrooms. You can pair this up with Crystal Quest’s SMART filter and carbon filters to treat other pollutants. Depending on your water needs, you have the option to purchase this whole-house filter in single, double, or triple configurations. Naturally, higher configurations come at an additional cost.
Crystal Quest’s arsenic filter will last 2–5 years, with the cost running around $261. The rest of the filters will last 12–18 months and cost you around a total of $70.
What makes me skeptical about this unit is that I couldn’t find any certifications to prove it can actually remove water contaminants. And let’s not forget, cartridge filters can be quite a hassle with all that maintenance and constant swapping.
Lastly, you’ll get only a one-year warranty on this whole-house unit, which pales in comparison to the lifetime warranty offered by brands like Moen and US Water Systems.
6. iSpring RCB3P
The iSpring RCB3P is a reverse osmosis filtration system that can produce 300 gallons of fresh water a day. It doesn’t come with a storage tank, so you’ll have to spend some extra cash to get one separately. According to the brand, this RO filter is capable of removing over 1000 contaminants in water. I couldn’t really find any certification or test results to prove those claims.
It features sediment filters and carbon filters, along with RO filters, to take care of a wide range of contaminants, including arsenic.
The filter comes with a built-in booster pump that improves the flow rate. You should note that this filter is only good for small families or small-scale commercial applications like salons, offices, and restaurants.
They’re easy to install, so no worries there. But here’s the thing: You’ll need to keep up with some maintenance tasks. That means regularly checking for leaks and swapping out the filters when necessary. It’s a bit of work.
Plus, it comes with only one year of warranty.
7. WECO Hydrosense Water Filter System
The WECO Hydrosense is another reverse osmosis system that can remove about 80% arsenic III and up to 99% arsenic V. One thing to note about this system is you will need to buy atmospheric tanks and jet pumps to make this a whole-house system, which will cost you extra money.
WECO comes with a prefilter that removes dirt, silt, and chlorine in water. This system is packed with water pressure sensors and booster pumps to ensure a consistent flow of clean water throughout your home. It has the capacity to purify up to 500 gallons of water per day, which is good enough for a couple living in a small apartment.
Installing the WECO Hydrosense might not be a walk in the park. It could require the expertise of a licensed plumber, which might add to the cost. Additionally, if you’re looking to transform it into a whole-house filter, a helping hand would definitely be beneficial.
I couldn’t find any certifications or warranties on this unit. This whole-house filter is quite expensive for the mediocre features it offers.
The Bottom Line
After testing and analyzing filters for nine months, I can confidently say that the Moen RO system emerges as the clear frontrunner.
Its four-stage filtration process — including a sediment filter, pre-carbon filter, high-recovery RO membrane, and post-carbon filter — removes 99% of arsenic, plus heavy metals, pesticides, chlorine by-products, and more.
Beyond top-tier filtration, it’s designed to be eco-friendly with a 1:1 water ratio, reducing waste compared to traditional RO systems. Its compact build fits neatly under most sinks, and it includes a Sip™ traditional one-handle high-arc beverage faucet for a sleek, convenient way to enjoy clean, great-tasting water.
With a five-year warranty, a six-month risk-free guarantee, and free shipping, it’s a reliable and affordable investment.
Want the purest, safest water? Upgrade to the Moen Reverse Osmosis System today — because clean water isn’t a luxury, it’s a necessity.
Research Methodology
Finding the best arsenic filters was no walk in the park. It took me almost nine months to test and analyze whole-house water filters and rank the best ones. If you’re curious about how I ranked the filters on this list, here’s how I did it.
Step 1: A big list of every product available
To kick-start my research into the best whole-house arsenic filters, my first step was to gather the names of popular filters available on the market, including ones found on platforms like Amazon and Walmart.
Additionally, I sought assistance from trusted sources like friends and family and even consulted with my local plumber. Their insights and recommendations played a crucial role in narrowing down my options and getting a better understanding of the most reliable and effective filters out there.
Step 2: Online reviews
Moving on to the second step of my research, I delved into reading online reviews and testimonials shared by verified customers across the US. This allowed me to gather valuable insights into the performance and user experiences of various products.
I noted the pros and cons of each unit and excluded the ones that had the worst ranking online. Interestingly enough, during my research, I stumbled upon a bunch of bogus and paid reviews for certain brands. Sneaky, right? But I was not fooled. I swiftly excluded those brands from my list.
Step 3: Product analysis
Before I could judge and rank the filters, I realized I needed to gather even more information about whole-house arsenic water filters. So, I turned to my old friend, the Google search bar, and entered a few questions off the top of my head.
I got to know that arsenic in water can be treated with the following filters and technologies:
- Reverse osmosis systems (most reliably)
- Greensand filters
- Oxidation
- Adsorption
- Distillation
I also learned that arsenic enters drinking water supplies through natural deposits, as well as agricultural and industrial practices. And that the Environmental Protection Agency (EPA) has set a safety limit at 10 PPB of arsenic in drinking water.
Here are a few other questions I searched for answers to:
- Can a filter really remove arsenic from my water supply?
- What are the harmful effects of arsenic and how does it get into drinking water?
- What is the ideal flow rate?
- What certification should I look for in an arsenic water filter?
- How should I determine the size of the filter according to the water usage?
- What other industrial poisons and industrial solvents should I worry about?
Step 4: Interviews with real customers
In the next step, I interviewed customers who had used whole-house arsenic water filters. Some sent me their test reports, while others invited me to their homes to try out the water myself. I also put together a survey on Facebook, which gave me some valuable insights.
It was awesome to get direct feedback and different perspectives from real users in my quest for the best filters.
Step 5: Interviews with companies
Next, I decided to email each brand on my list with questions about their certifications, performance, and warranties. It was a fantastic opportunity to analyze how responsive and helpful they were when faced with challenging inquiries.
By engaging in these conversations, I gained valuable insights into their commitment to user satisfaction and their willingness to go the extra mile. It was a crucial step in determining which brands truly prioritize their customers’ needs and stand behind their products.
Step 6: Test drives
So, the next step in my research was to actually test the filters on my list. I rented some and borrowed others, and with the help of a friend, we set up a testing rig in the basement of my house.
Using a water testing kit, I analyzed the filtration performance of each filter. It was really interesting to see how well they tackled different contaminants. During my testing, I also paid attention to how easy they were to install and maintain. Those factors played a big role in my evaluation.
From flow rates to overall efficiency, each filter had its own unique characteristics, and it brought me one step closer to finding the perfect whole-house arsenic filter.
Step 7: Ratings
Now that I had gathered all the information about the whole-house arsenic filters on my list, it was time for the ultimate task: ranking them from #1 to #7.
To do this, I pulled out my old whiteboard from the attic. Channeling my inner detective, I created columns and started jotting down all the important details about each water filter. It was like piecing together a puzzle to determine which filter deserved the top spot.
Here are the characteristics I ranked each filter against:
- Filtration performance
- Flow rate
- Filter durability
- Certifications
- Easy installation
- Easy maintenance
- Cost
- Warranty
- Customer review
Final Thoughts
After nine months of meticulous research, I can confidently say that the Moen Reverse Osmosis System is the best arsenic filter you can buy today. Here’s what makes it stand out:
- Robust 4-stage filtration process
- Produces super clean water for drinking and cooking
- Eco-friendly 1:1 clean to wastewater ratio
- Includes a Sip™ high-arc faucet
- Easy to install and maintain
- Includes a 5-year warranty and 6-month guarantee
It’s all about keeping your H2O clean and staying healthy. Stay hydrated, my friend, and don’t let arsenic ruin the party. Buy the Moen Reverse Osmosis System today.
If you are intrigued and want to explore more about whole-house water filters, these extra resources can provide you with detailed insights:
