Arsenic Filters

What Is Arsenic and Why Does Testing Matter?

Arsenic can occur naturally in groundwater, and it may not change the taste, odor, or appearance of your water at all, which is why a water test is the only reliable way to know whether it's present.

A good test identifies total arsenic and, where possible, distinguishes between the As+3 and As+5 forms, since some media perform differently depending on which form dominates.

Follow local public-health guidance and consult a qualified water professional if you have questions about your specific results, since AFW can't make medical determinations about your water.

Arsenic Filters by System Type

Whether you need a single arsenic removal filter for an existing housing or a complete arsenic water filtration system for your whole house, the right starting point is matching the product to your test results and flow needs.

LayneRT Arsenic Removal Replacement Filters

The LayneRT 4.5" x 20" Arsenic Removal Replacement Filter is a standard Big Blue-format arsenic removal filter with minimal flow restriction, sized to fit a compatible 20-inch Big Blue housing.

Single-Stage Big Blue LayneRT Arsenic Filter

The Single Stage Big Blue LayneRT Arsenic Filter is a complete one-stage system, not just a replacement cartridge, with large 1-inch connections, a mounting bracket, and a filter housing wrench included.

GreenFlo LayneRT Upflow Arsenic Filter Systems

The GreenFlo LayneRT Upflow Arsenic line comes in three sizes: Arsenic 10 (GF-AS10), Arsenic 15 (GF-AS15), and Arsenic 20 (GF-AS20). Their upflow design is intended to reduce the need for backwashing, and tank size and capacity scale up across the three models. Which one suits your home depends on your water test and required flow, not just the model number.

AdEdge Bayoxide E33 Arsenic Media

Available as loose replacement media in 1.0, 2.0, and 2.7 cubic foot options, Bayoxide E33 is intended for the removal of As+3 and As+5 forms of arsenic. The media volume needs to be matched to your tank, flow, contaminant concentration, and operating conditions, which is a job best done alongside your water test results.

Digital AdEdge Arsenic Systems with Fleck 2510SXT

The Digital AdEdge Arsenic 10, Arsenic 20, and Arsenic 27 systems use a digital Fleck 2510SXT control valve for whole-house treatment. The Arsenic 10 listing states removal of up to 99% of both As+5 and As+3 at a maximum flow rate of 6 GPM for total arsenic concentrations of 100+ ppb; that performance claim is specific to that system and its stated operating conditions, not a guarantee across every arsenic water filter system on this page.

ResinTech ASM Arsenic Media and Systems

ASM-10-HP media and ASM-05 media are available separately, along with complete ASM Arsenic 10, ASM Arsenic 15, and ASM Arsenic 20 systems built with the Fleck 2510SXT. Each is designed for arsenic reduction according to its specific flow rating; check the individual product page for the right fit.

Arsenic Filter for Well Water

Arsenic is dissolved and invisible, so you can't judge it by sight. Iron and manganese, common in well water, can interfere with how well arsenic media performs. pH and oxidation state affect media performance too; sediment may require pre-filtration to protect the arsenic media, and flow rate determines both contact time and how large a system you need.

A complete water analysis before selecting a filter for arsenic in water is the single best step you can take, and it's the same step we'd recommend before choosing any of AFW's arsenic water filtration systems. If your test also shows iron or manganese, take a look at our iron and sulfur filters as well.

How to Choose a Water Filter That Removes Arsenic

Finding a water filter that removes arsenic starts with your test results, not the product catalog. Here's how AFW recommends working through it:

• Step 1: Test for total arsenic. Confirm the concentration, and, where the test allows, whether it identifies the specific arsenic species present.
• Step 2: Identify flow and usage. Calculate your peak flow, daily gallon usage, number of bathrooms, simultaneous fixture demand, and the treatment duration you'll need.
• Step 3: Select a cartridge, media, or complete system. Replacement cartridges suit compatible Big Blue housings you already own. Loose media is for loading or re-bedding a treatment tank. Complete systems include the tank, valve, and media together. Digital systems automate backwashing or regeneration where applicable.
• Step 4: Confirm installation and maintenance requirements. Check tank dimensions, valve type, drain connection, flow requirements, whether media needs periodic replacement or re-bedding, your plan for post-treatment testing, and the space you actually have available.

Maintenance and Performance Monitoring

Replace cartridges according to your water quality and usage, and re-bed loose media once it's exhausted. Check your control valve's operation periodically, monitor pressure and flow, and retest treated water regularly to watch for breakthrough.

Keep any pre-treatment (like sediment or iron removal) maintained too, since a failing pre-filter can shorten the life of your arsenic media. Follow the product manual for your specific system; AFW doesn't promise a fixed media lifespan across all our arsenic water filtration systems, since actual life depends on your water chemistry and usage.