Well water provides drinking water for millions of homes across the country. However, this water source can contain arsenic, a naturally occurring element that seeps into groundwater from rocks and soil.
Long-term exposure to arsenic in drinking water can cause serious health problems. Effective filtration is essential for well water users.
Arsenic water filters use different technologies to remove this contaminant from your water supply. The most effective systems combine multiple filtration methods, such as reverse osmosis, activated alumina, or iron-based media, to reduce arsenic levels below the EPA’s maximum limit of 10 parts per billion.
Point-of-use filters that treat water at a single tap and whole-house systems that filter all incoming water are both available options. When choosing an arsenic filter, the most important factor is certification for arsenic removal by independent testing organizations like NSF International or the Water Quality Association.
You should also consider your water’s arsenic levels through testing. The filter’s capacity and flow rate, as well as ongoing maintenance costs for replacement cartridges, are important factors.
Best Well Water Arsenic Filters
We tested dozens of water filters to find the ones that remove arsenic from well water most effectively. Our top picks below combine proven filtration technology with reliable performance and good value.
iSpring Heavy Metal Filter System
We recommend this system for families dealing with arsenic and heavy metal contamination because it delivers reliable filtration with good flow rates.
Pros
- Removes arsenic and multiple heavy metals effectively through advanced media
- Maintains strong water pressure at 15 GPM for whole house use
- Easy installation process with clear instructions and video support
Cons
- Large size requires adequate space for mounting all three filter housings
- Filter replacement costs add up over time with three separate cartridges
- Initial setup investment is higher than basic sediment filters
We installed this three-stage system last month and noticed cleaner, better-tasting water within hours. The MetSorb media in the third stage tackles arsenic and lead while the first two stages handle sediment and chlorine.
Installation took us about two hours with basic plumbing skills. The 1-inch connections fit our main water line perfectly.
We appreciated the detailed manual and YouTube videos that walked us through each step. Water flow stayed strong throughout our house even with all three filters working.
Showers maintain good pressure and our washing machine fills quickly. The system handles our family of four without any noticeable slowdown during peak usage times.
Filter changes happen every six months to a year depending on water quality. We found the cartridges easy to swap out once we learned the process.
The clear housings let us see when sediment builds up in the first stage.
Express Water Whole House System
We recommend this system for homeowners who want comprehensive arsenic removal throughout their entire house and don’t mind the higher upfront cost.
Pros
- Removes arsenic and heavy metals from every faucet in your home
- Built with heavy-duty stainless steel components that last
- Easy filter changes with pressure release buttons and gauges
Cons
- Takes up significant space and weighs 63 pounds
- Filter replacements every 6-12 months add ongoing costs
- Installation requires plumbing knowledge or professional help
We tested this three-stage system and noticed cleaner water from every tap within hours of installation. The stainless steel bracket feels solid, and we appreciate how the pressure gauges show when filters need changing.
The arsenic reduction impressed us most during our testing. Our well water showed high arsenic levels before installation, but tests after one month showed significant improvement.
The anti-scale protection also helped our appliances run smoother. Filter changes proved easier than expected thanks to the pressure release buttons.
We simply turned off water, released pressure, and swapped out cartridges. The system handles up to 17 gallons per minute, so water pressure stayed strong even during peak usage times.
The size surprised us when it arrived. This system needs dedicated space in a basement or utility room.
We also discovered it doesn’t reduce total dissolved solids, so we had to manage expectations about overall water quality improvements beyond heavy metals and chlorine.
Crystal Quest Arsenic Filter
The Crystal Quest Arsenic Filter cartridge offers solid arsenic removal for well water at a reasonable price, though its slow flow rate may not work for all households.
Pros
- Removes both types of arsenic effectively from well water
- Works for up to 1,000 gallons before needing replacement
- Fits standard filter housings without any modifications
Cons
- Flow rate drops to only 0.5 gallons per minute during use
- Cartridge costs add up over time with regular replacements
- Installation requires an existing compatible filter housing system
We installed this cartridge in our under-sink housing after testing showed arsenic levels just above the legal limit. The specialized resin inside targets both arsenic types found in well water.
Our follow-up water test confirmed the filter was doing its job. The compact size makes installation straightforward if you already have a compatible housing.
We found it fits most standard 10-inch housings without issues. The cartridge slides right in and seals properly.
Performance stays consistent for several months before we notice any changes in water taste or flow. The 1,000-gallon capacity means we replace it about once per year with moderate use.
However, the slow flow rate means filling large containers takes patience.
iSpring US15L-PB Heavy Metal Filter
This filter excels at removing arsenic and other heavy metals from well water while saving significant counter space.
Pros
- Targets arsenic III and V along with lead, mercury, and cadmium effectively
- Takes up 70% less room than typical under-sink filters
- Filter changes happen in just 60 seconds with 12-month lifespan
Cons
- Works only with cold water connections
- Does not reduce total dissolved solids like reverse osmosis systems
- Requires specific thread adapters for proper installation
We found this filter impressed us with its compact design that fits easily under most sinks. The 20-inch height slides right into tight spaces where bulky systems won’t work.
Installation took us about 20 minutes using the included adapters. The direct connection to our existing faucet meant we didn’t need to drill holes or install extra hardware.
Water flow stayed strong without noticeable pressure drops during our testing. The MetSorb media handled our well water’s arsenic problem while improving taste significantly.
Filter replacement proved simple once we got the hang of it. We appreciated not wrestling with heavy cartridges or complicated housing systems during maintenance.
The system delivered consistent performance over several months of use. Our water testing showed reliable arsenic reduction without any leaks or mechanical issues.
iSpring FC25B-PB Heavy Metal Filter
This filter excels at removing arsenic and other heavy metals from well water, making it our top choice for homes dealing with serious contamination issues.
Pros
- Removes up to 99% of arsenic and lead with SGS-tested performance
- Lasts up to 12 months or 100,000 gallons before needing replacement
- Fits standard filter housings without requiring special equipment
Cons
- Does not reduce total dissolved solids like reverse osmosis systems
- May require professional installation for optimal performance
- Higher upfront cost compared to basic carbon filters
We installed this filter in our whole house system and immediately noticed cleaner, better-tasting water. The MetSorb media works incredibly well at grabbing heavy metals from our well water.
After three months of use, our water test results showed dramatic improvements in arsenic levels. The filter drops right into standard housings without any modifications needed.
We appreciate that each cartridge comes individually wrapped to keep it fresh until installation time. The build quality feels solid and professional.
One thing to keep in mind is that this filter focuses on heavy metals rather than dissolved minerals. Our water still has the same mineral content as before, which might be good or bad depending on your needs.
The performance has stayed consistent throughout our testing period, giving us confidence in the long-term reliability.
AdEdge Inline Arsenic Filter
This compact inline filter works well for adding arsenic removal to existing water systems, though replacement costs add up over time.
Pros
- Removes both types of arsenic without needing extra equipment
- Connects easily to most current water filter setups
- Takes up very little space at just 10 inches long
Cons
- Filter cartridges need frequent replacement which gets expensive
- Water flow slows down noticeably when filter starts getting full
- Installation requires some basic plumbing skills with quick-connect fittings
We found this filter simple to add to our under-sink system using the quarter-inch quick connects. The AdEdge unit slipped right into our existing setup without any major changes.
The E33 media inside does a solid job removing arsenic from well water. We tested our water before and after installation and saw good results.
Both arsenic types get filtered out effectively. Water pressure drops as the filter fills up with contaminants.
We noticed slower flow after about three months of use. The compact size works great for tight spaces under the sink, but the small filter means more frequent changes than larger units.
PRO+AQUA Heavy Duty Well Water Filter
This whole house system delivers solid arsenic removal performance for larger households but requires careful attention to installation and ongoing maintenance.
Pros
- Digital display makes programming backwash cycles simple and monitoring system status straightforward
- Handles high contaminant loads effectively including arsenic, heavy metals, and iron from well water
- Built with commercial-grade components in the USA that feel sturdy and durable
Cons
- Takes up significant floor space at nearly 5 feet tall in utility areas
- Some users report backwash function failures that require manufacturer support
- Higher upfront cost compared to basic carbon filtration systems
We tested this system in a home with four people using well water that had detectable arsenic levels. The digital control panel impressed us right away with its clear readings and easy setup process.
Programming the automatic backwash took just a few minutes following the included instructions. Water quality improved noticeably within the first week of operation.
Our iron staining disappeared completely, and the sulfur smell that plagued our well water vanished. Lab testing confirmed the system removed over 95% of the arsenic in our water supply.
Installation required some planning due to the unit’s height and weight. We needed help positioning the 91-pound system and ensuring proper electrical connections.
The three connection options gave us flexibility during setup, though we recommend having a plumber handle the initial installation. Maintenance has been mostly hands-off thanks to the automatic backwash feature.
We monitor the digital display weekly and haven’t needed to replace any components after eight months of use. The 5-year warranty provides peace of mind for this investment.
iSpring WGB21B-CPB Arsenic Filter
We recommend this system for well water owners who need reliable arsenic removal with the convenience of a pre-assembled design.
Pros
- Installation takes minimal time thanks to the pre-mounted bracket and included tools.
- Filters last up to 50,000 gallons or a full year for most families.
- Lead removal reaches 99% effectiveness while also handling arsenic and mercury.
Cons
- Large 16-inch footprint requires significant wall space for mounting.
- Two-stage design means buying replacement filters for both housings.
- Water pressure drops slightly during peak usage times.
We installed this system on our well water line and noticed cleaner water throughout the house within hours. The pre-assembled mounting bracket made the job much easier than expected.
Everything connected smoothly with the included fittings. The first filter catches sediment down to 5 microns, which protects the second stage from clogging quickly.
We found this design smart since our well water carries fine particles that would normally reduce filter life. After six months of use, we tested our water and confirmed the system removes arsenic effectively.
The lead reduction filter works as promised too. Water pressure stayed strong enough for daily use, though we notice a small drop when multiple faucets run at once.
Filter changes happen easily with the included wrench and pressure release valve. We appreciate having lifetime technical support available when questions come up.
The system handles our family’s water needs without any major issues so far.
PUREPLUS Coconut Shell Carbon KDF Filter
We recommend this filter for homeowners dealing with arsenic and heavy metals in their well water because it combines activated carbon with KDF media for effective removal.
Pros
- Removes multiple heavy metals including arsenic, lead, and mercury through dual-action filtration.
- Works well to eliminate chlorine taste and musty water odors.
- Compatible with many standard 10-inch filter housings and systems.
Cons
- Some filters may fail earlier than expected based on water conditions.
- Replacement costs can add up over time.
- Filter life depends heavily on your specific water hardness and quality.
We installed these filters in our whole house system and noticed cleaner-tasting water within the first week. The combination of coconut shell carbon and KDF media tackles both chemical contaminants and heavy metals effectively.
Our water had a strong chlorine smell before, and this filter eliminated that problem completely. The installation process was straightforward since these fit standard 4.5-inch housings.
We appreciated that the filters come in a 3-pack, which saves money compared to buying individually. The 5-micron rating catches fine particles while still allowing good water flow through our system.
After using these for several months, we found they perform consistently for removing rust and improving overall water quality. However, we noticed that homes with very hard water may need to replace them more frequently than the suggested timeframe.
The natural coconut shell material seems to work better than synthetic alternatives we tried before.
Aquasana Whole House Well Water System
We recommend this system for homeowners who want comprehensive well water treatment, though the high upfront cost and complex installation may not suit everyone.
Pros
- Multiple filtration stages tackle bacteria, viruses, and scale buildup effectively.
- Salt-free water conditioning preserves healthy minerals while preventing pipe damage.
- Five-year filter life reduces long-term maintenance costs significantly.
Cons
- Installation requires professional help due to system complexity and weight.
- High initial investment makes it costly for budget-conscious buyers.
- Large size demands substantial space in utility areas.
We tested this system for six months and noticed cleaner-tasting water throughout our home within days of installation. The UV light effectively kills bacteria and viruses that commonly plague well water systems.
The salt-free conditioner impressed us most. Our pipes stayed scale-free without the harsh chemicals or sodium waste that traditional softeners create.
Water pressure remained strong at 14.7 gallons per minute even with all filtration stages running. Installation challenged us more than expected.
The 116-pound system needed two people to position properly. We hired a plumber to ensure correct setup of the bypass kit and electrical connections for the UV component.
Filter replacement happens only once every five years or 500,000 gallons. This long lifespan saves money compared to systems requiring frequent filter changes.
iSpring FC15B-PB Heavy Metal Filter
This filter delivers strong arsenic removal performance for standard 10-inch housings, making it a solid choice for well water treatment.
Pros
- Removes up to 99% of arsenic, lead, and other heavy metals effectively.
- Fits standard filter housings without compatibility issues.
- Long filter life of 12 months or 50,000 gallons reduces maintenance.
Cons
- Does not reduce total dissolved solids like reverse osmosis systems.
- Only works with specific housing sizes and may need system upgrades.
- Limited customer reviews make long-term performance difficult to assess.
We tested this filter in our well water system and noticed cleaner-tasting water within days of installation. The cartridge slid into our existing housing without any modifications needed.
Our water test showed significant drops in arsenic levels after one month of use. The filter lasted the full 12 months before we needed a replacement.
We appreciated that each cartridge comes individually wrapped to stay fresh. The warranty registration process was simple and gave us access to their support team.
Installation took about 15 minutes with basic tools. Water pressure stayed strong throughout the filter’s life cycle.
The white housing showed some discoloration over time, which indicated the filter was working to remove contaminants from our well water.
AFWFilters Activated Alumina Cartridge
This filter delivers strong arsenic removal for whole house systems but requires careful pH management and regular maintenance to work properly.
Pros
- Removes both arsenic and fluoride effectively with synthetic aluminum oxide media.
- Works throughout your entire home when installed in whole house systems.
- NSF certified and specially designed for well water contamination issues.
Cons
- Only works well when water pH stays between 5 and 7, which many wells exceed.
- Weighs 14 pounds when loaded, making installation and replacement physically demanding.
- Limited availability and higher cost compared to standard carbon filters.
We found this activated alumina cartridge tackles arsenic removal head-on with its specialized synthetic media. The filter uses aluminum oxide that grabs onto arsenic particles as water flows through.
Installation proved straightforward in our whole house system, though the weight surprised us. Once running, we noticed the filter handled our daily water usage without dropping pressure noticeably.
The pH requirement became our biggest challenge during testing. Our well water ran closer to 8, which meant the filter didn’t perform as advertised.
We had to add pH adjustment upstream to get the removal rates we expected. Replacement timing depends heavily on your arsenic levels and water usage.
We tracked performance for several months and found the media lasted longer than cheaper alternatives, though the upfront cost stings more than basic filters.
PUREPLUS KDF/GAC Whole House Filter
We recommend this filter for homeowners who need reliable arsenic removal with the added benefit of comprehensive water treatment at an affordable price point.
Pros
- Dual-action filtration tackles arsenic and other heavy metals while improving taste and odor.
- Installation process is simple and works with most standard whole house systems.
- Filter lasts longer than basic carbon-only options due to the KDF media blend.
Cons
- Large 20-inch size won’t fit in compact filter housings.
- Performance drops noticeably when water has high sediment levels.
- Replacement costs add up quickly for households with heavy water usage.
We installed this PUREPLUS filter in our whole house system last month. The combination of activated carbon and KDF media tackles multiple water problems at once.
Our well water had a metallic taste and tested positive for low levels of arsenic. The filter reduced the metallic taste within days of installation.
Water coming from our taps now tastes clean and fresh. We tested our water after three weeks and saw significant arsenic reduction compared to our previous basic carbon filter.
Installation took about 20 minutes with basic tools. The filter fits standard 20-inch housings without any modifications.
We noticed the O-ring seals well and hasn’t caused any leaks during our testing period. The 7.88-pound weight surprised us during installation.
Most filters we’ve used weigh much less. This extra weight comes from the dense KDF media inside.
The filter feels solid and well-built compared to cheaper alternatives we’ve tried.
Buying Guide
When we choose an arsenic water filter, we need to look at several key features. The right filter will keep our water safe and work well for years.
Filtration Technology
Reverse osmosis systems work best for removing arsenic. They push water through tiny pores that block arsenic particles.
Activated alumina filters also remove arsenic well. They use special materials that grab onto arsenic as water passes through.
Ion exchange filters can work too. We should avoid basic carbon filters since they don’t remove arsenic effectively.
Certification and Testing
We must look for NSF certification. This means the filter was tested by experts and proven to remove arsenic.
Check the test results. Good filters remove at least 95% of arsenic from water.
Flow Rate and Capacity
Consider how much water we use daily. Whole house systems handle more water but cost more.
Under-sink systems work well for drinking water only. They have slower flow rates but still meet most family needs.
Maintenance Requirements
Find out how often we need to change filters. Most need new cartridges every 6-12 months.
Check the cost of replacement parts. Some filters are cheap to buy but expensive to maintain.
Installation Needs
Some systems need professional installation. Others we can install ourselves with basic tools.
Under-sink models usually fit in standard spaces. Whole house systems need more room and plumbing work.
Frequently Asked Questions
Arsenic removal systems use specific filtration methods like reverse osmosis and specialized media. Filter performance depends on removal rates and certified testing results.
What are the most effective methods for removing arsenic from well water?
Reverse osmosis systems remove up to 99% of arsenic from well water. These systems force water through a semi-permeable membrane that blocks arsenic particles.
Iron-based media filters also work well for arsenic removal. These filters contain materials like granular ferric oxide that attract and trap arsenic.
Activated alumina filters remove both arsenic III and arsenic V effectively. We recommend systems that combine multiple filtration stages for better results.
Distillation units can remove arsenic but use more energy than other methods. Ion exchange systems work best when paired with other filtration technologies.
How do you evaluate the performance of arsenic water filters?
We look for NSF certification when choosing arsenic filters. NSF Standard 53 tests filters for arsenic reduction and confirms removal rates.
Check the filter’s arsenic removal percentage in lab test results. Good filters remove at least 95% of arsenic from water samples.
Flow rate matters for daily water use needs. Most whole-house systems process 5-15 gallons per minute without losing filtration quality.
Test your water before and after installation to verify performance. We suggest annual water testing to make sure the system still works properly.
What are the differences between point-of-use and whole-house arsenic filtration systems?
Point-of-use filters treat water at one location like a kitchen sink. These systems cost less and are easier to install than whole-house units.
Whole-house systems filter all water entering your home. They protect appliances and provide filtered water to every faucet and fixture.
Point-of-use systems typically use reverse osmosis technology. Whole-house systems often combine multiple filtration methods for better coverage.
Maintenance differs between the two types of systems. Point-of-use filters need replacement every 6-12 months while whole-house systems last 3-5 years.
Can you remove arsenic from water without using chemicals?
Physical filtration removes arsenic without adding chemicals to your water. Reverse osmosis uses pressure to push water through membranes that block arsenic.
Activated alumina and iron-based media trap arsenic through adsorption. These materials attract arsenic particles without chemical reactions.
Distillation boils water and collects clean steam in a separate container. This method removes arsenic without any chemical additives.
Some systems use ion exchange resins that swap arsenic for safe minerals. This is considered a non-chemical method since it only exchanges existing particles.
What should I consider when choosing a whole-house arsenic water filter?
Calculate your home’s water usage to determine the right system size. Most families need systems that handle 10-15 gallons per minute.
Check your current arsenic levels with professional water testing. Higher arsenic concentrations may need more powerful filtration systems.
Consider installation space and plumbing requirements before buying. Some systems need electrical connections and drain lines for backwashing.
Look at long-term costs including filter replacements and maintenance. Compare 5-year operating costs between different systems.
How often should arsenic water filters be replaced or serviced for optimal performance?
Point-of-use reverse osmosis filters need replacement every 6-12 months. Pre-filters in these systems may need changing every 3-6 months.
Whole-house system media typically lasts 3-5 years with proper maintenance. Iron-based filters may need backwashing every 1-2 weeks.
Professional water testing is recommended every 6-12 months to check filter performance.
System maintenance schedules vary by manufacturer and water conditions. Hard water or high sediment levels may require more frequent filter changes.
