Best Reverse Osmosis System for Arsenic – 2024 Review & Comparison

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Arsenic is a contaminant usually found in the earth’s crust. In excess amounts, it can make its way into surface and groundwater through industrial processes like mining.

Arsenic is tasteless and odorless and can go undetected in your water.

Consumption of arsenic-contaminated water can lead to dreadful health results such as vomiting, diarrhea, skin discoloration, stomach pain, blindness, and partial paralysis.

Long-term exposure to this chemical can also lead to death.

To prevent these side effects, you need to find ways to remove this dangerous contaminant from your water.

And a reverse osmosis system is your best bet!

Reverse osmosis systems filter water in multiple stages, removing even the most stubborn water contaminants.

The units have a semi-permeable membrane with very tiny pores that allow water molecules to pass through but trap larger molecules from contaminants like arsenic and lead.

To help you get the best reverse osmosis system for arsenic for your household, we have compiled this detailed review. Keep reading to make an informed buying decision.

Best Reverse Osmosis System for Arsenic: Comparison Table

BrandiSpring RO500-BNiSpring RCC7AK-UVAPEC RO-HiAquaTru 90AT02AT01Deepuro WS6A
Dimensions(inches)19 x 8 x 2415 x 8 x 1817.5 x 16 x 5.214 x 14 x 1215.7 x 13 x 6.4
Water filtration stages  3  7  5  4  5
Water flow rate  500 GPD  75 GPD  90 GPD  1 gallon in 10 – 15 minutes  600 GPD
Pure-to-waste water ratio  2:1  2:1  1:3  2:1  1:2
Installation method  Under sink  Under sink  Under sink  Countertop  Under sink
Certification NSFWQANSFCE
Warranty1-year limited manufacturer warranty1-year limited manufacturer warranty2-year extended manufacturer warranty on registration1-year warrantyMachine life tech support

1. iSpring RO500-BN Tankless RO System

The iSpring RO 500 is a high-output next-generation RO system from iSpring that has raised the bar for water filtration and purification.

The model produces 500 gallons of water daily and has an exceptional pure water-to-waste ratio of 2:1.

Some of the key features that make the RO500-BN one of the best RO systems for arsenic include:

Superb filtration performance:

The system filters water in 3 stages. Each stage is designed to eliminate contaminants and improve water quality progressively.

The first filtration stage uses a composite filter (FCF500) to remove sediment, chlorine, and unpleasant odor.

In the 2nd stage, a high-flow reverse osmosis membrane (MRO500) removes over 1,000 contaminants, including arsenic, lead, fluoride, and more.

In the final stage, a carbon block filter (FCB500) further polishes the water to remove any lingering taste and odor.

High output

The RO500-BN produces up to 500 gallons of pure water daily and 0.4 gallons every minute. The system is 4 times more effective than conventional models.

With a fast and stable water flow, the system can fill a cup of water in less than 7 seconds.

Additionally, the model meets the needs of large households and companies.

Economical and ecological choice

With an exceptional filtered water-to-waste water ratio of up to 2:1, this model saves water waste by up to 400%.

It contributes to less water going down the drain and less water bills.

Easy DIY installation and filter replacement

The RO500-BN has a detailed installation instruction manual that makes the process easy. Additionally, the integrated water route minimizes connectors easing installation and eliminating leakages.

Replacement filters are available from the brand. You only need to get order at a small fee. And replacing them is quite a breeze, thanks to the twist and locking filter feature.

Additional features that make the system worth investing in include real-time TDS monitoring, top quality faucet, and a filter life indicator.

The system also comes with a 30-day money-back policy and a 1-year limited manufacturer warranty.


  • Fast flow rate of 500 GPD
  • Compact and space-saving
  • Low drain ratio of 1:2
  • Has a filter life indicator
  • Backed by 1-year limited manufacturer warranty


  • Expensive

2. iSpring RCC7AK-UV Under Sink RO System

The RCC7AK-UV is a 7-stage reverse osmosis system highly rated for efficiency. It is an upgraded version of the iSpring RCC7AK with an extra UV filter.

The model removes up to 99.99% of harmful contaminants in municipal and well water. It produces 75 gallons of water daily and has a drain ratio of 3:1.

The system is also easy to install and comes with everything you need. Even with basic DIY skills, you can complete the project in less than 1 hour.

Some of the key features that make the RCC7AK-UV a worthy investment include:


The system has an alkaline remineralization filter that restores healthy minerals and a natural taste to the water. As a result, you get great-tasting water.

Ultraviolet light filter

The UV filter makes the RCC7AK-UV the best system when it comes to the removal of microorganisms from water.

The UV light sterilizes the water by killing bacteria, viruses, and other microorganisms that remain in the water after reverse osmosis.

It destroys the DNA of these microorganisms and kills them, eliminating them from the water.

The UV stage makes this system the best to deal with well water and water from other sources like lakes and streams.

Reinforced transparent 1st stage housing

A transparent first filtration stage housing makes filter inspection a snap. You can always tell when filter replacement is due.

High-quality components

The RCC7AK-UV boasts high-quality components that ensure reliability and low maintenance for years to come.

Additional features that make the system worth giving a try include NSF/ANSI certification, long-lasting filters, and a 4-gallon storage tank.


  • Kills viruses, bacteria, and other microorganisms
  • Produces 75 gallons of water daily
  • Comes with a water leakage alarm
  • Remineralization improves the taste of the water
  • Backed by a 3-year limited manufacturer warranty
  • 1-year money-back guarantee


  • Wastes a lot of water

3. APEC RO-Hi Ultra Safe RO System

If you are looking for a durable, highly effective reverse osmosis, try the APEC RO-Hi. The model is designed and assembled in the USA to ensure the safety of your water.

It ensures the highest water contaminant removal rates to give you the purest water possible.

Some of the unit’s key features include:

Quick dispense design

The RO-Hi features a 3/8 inches fast flow output design that increases the water flow from the tank to the faucet.

The higher water flow allows you to a cup or glass of water much faster. It reduces the wait time when filling large pots of water.

Superior filtration performance.

This system filters water in 7 stages and removes up to 99% of water contaminants such as arsenic, lead, fluoride, chlorine, chromium, and more.

It uses a high-capacity polypropylene sediment filter in the 1st stage to remove dust, dirt, and rust.

In the 2nd and 3rd stages, the model uses a carbon block filter to remove bad tastes, odor, cloudiness, chlorine, and VOCs from the water.

A high-quality FILMTEC RO membrane removes up to 99% TDS, arsenic, lead, radium, chromium, and more.

And in the 5th and final stage, an advanced coconut shell carbon filter further polishes the water to eliminate any lingering tastes and odor.

Other features that make the RO-Hi RO system a high-rated unit include a large 14-gallon storage tank, WQA certification, premium faucet, parts, and easy DIY installation.


  • Requires minimal maintenance
  • High-quality parts
  • Produces up to 90 gallons of water daily
  • Has a large storage tank – 14 gallon
  • Well-written installation instructions


  • Takes more under sink space

4. AQUA TRU 90AT02AT01 Countertop RO System

The AQUA TRU 90AT02AT01 is a patented 4-stage reverse osmosis system that removes all contaminants to give you pure, crisp, and delicious water.

It comes in a sleek design and fits well on any kitchen countertop.

Some of the key features that make the 90AT02AT01 one of the best reverse osmosis system for arsenic include:

Highly effective long lasting filters

This model comes with durable filters that progressively remove contaminants in 4 stages.

In the 1st and 2nd stages, a pre-filter removes large particles like sediment and rust, while an activated carbon filter removes chlorine, odor, and bad taste from the water.

A ultra-fine RO filter removes dangerous inorganic chemicals like chromium 6, arsenic, lead, uranium, nitrates, and more.

In the final stage, an activated coconut block post-filter removes organic compounds like prescription drug residue, rocket fuel, and PFAs. It leaves you with pure great-tasting water.

Certified to NSF Standards

The system is NSF certified to remove 83 contaminants, including arsenic, lead, chlorine, fluoride, PFOs, and more.

Change filter alerts

Convenient change filter alerts o the digital display lets you know when to change the filters.

No plumbing or installation

The 90AT02AT01 comes fully assembled and requires zero plumbing. All you need to do is plug it into a power source and let it purify your water.

Additional features include an easy dispensing button, a removable dispensing tank, and easy filter replacement.


  • Space-saving design
  • Super easy to use
  • Requires zero installation
  • Purifies a gallon of water in 10 to 15 minutes
  • Wastes less water
  • Backed by a 1-year warranty


  • Expensive
  • Costly filters

5. Deepuro WS6A Under Sink RO System

Deepuro reverse osmosis systems are high-tech, innovative and expertly crafted to offer the best filtration results.

Their products have become the prioritized choice of thousands of families thanks to their reliability and efficiency.

The WS6A is a tankless RO unit from Deepuro that filters water in 5 stages, making it healthy and clean to drink.

So, why should you consider buying the WS6A?

Cutting-edge 5-stage composite filtration

The system adopts 5-stage composite filters that remove 1000+ contaminants from water, including lead, arsenic, mercury, fluoride, and chlorine, among others.

Fast water flow rate

The WS6A offers a fast flow rate of 600 gallons per day. It can fill a cup of water in 8 seconds and has a low drain ratio of 2:1.

House-oriented compact design

This unit might be what you need if you have limited under sink space. It has a small footprint of 15 .7 x 6.4 x 12.7 inches.

The tankless design prevents secondary water pollution that usually takes place in the storage tank.

Smart control panel

The system has a smart control panel with a filter life indicator that tells you when to replace the filters.

CE standard certification

To ensure that you will never have to worry about the quality of your water, the system is made from premium food-grade materials.

Some parts of the unit are strictly imported and certified by European conformity.


  • Produces 600 gallons of pure water daily
  • Made from food-grade materials
  • Comes with all accessories required for installation
  • Has a smart control panel
  • Comes in a space-saving design


  • No remineralization
Best Reverse Osmosis System for Arsenic


Getting the best reverse osmosis system for arsenic will give you peace of mind as you are assured of getting pure and healthy water from your tap at all times.

And the best thing is that the system will remove arsenic and thousands of other contaminants in your water.

Whether you have a small family or running a small business, the list has models to cater to your needs. We hope that you get what you are looking for. Cheers!

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Dr. Peter Gleick

Dr. Peter Gleick is an experienced water filtration engineer and technical writer for He is an expert in water purification and filtration, focusing on helping people get clean, safe, and healthy water for domestic use. He has more than 10 years of writing experience and has numerously contributed to leading publications in this field.

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