Best Water Filters to Remove PFAS

There are many water filters available, but not all are effective against PFAS. If you're looking to find an effective one, make sure it can reduce or eliminate PFAS from your drinking water. According to the EPA, reverse osmosis (RO) systems, granular activated carbon (GAC), and ion exchange resins can be effective at reducing PFAS. Here are some of the top products that fit into these categories:

Reverse Osmosis (RO) Systems

RO systems work by forcing water through a membrane that blocks contaminants like PFAS. This type of water filter is one of the best for removing PFAS because these chemicals are larger than water molecules, so they get trapped in the filter, leaving healthy drinking water behind. At All Filters, we offer high-quality countertop and under sink PFAS water filters.

SpiroPure SP-RO500 Countertop RO System

The SpiroPure SP-RO500 instant hot water RO with remineralization is a countertop system, so it's portable and you can easily move it from one location to the next. This system features six filtration stages, which all contribute to healthy drinking water. The core element is the RO membrane, which has micron equivalency of 0.0001, making this one of the best water filters for removing PFAS. A micron is equal to one thousandth of a millimeter, which is a microscopic unit of measurement. To put this in perspective, 0.0001 micron is 500,000 times smaller than the diameter of a human hair.

The extremely selective membrane of this water filter system blocks unwanted PFAS molecules as they hit the membrane, allowing only clean water molecules to make it through. The SpiroPure SP-RO500 also has two activated carbon filter stages before and after the RO membrane, which play an important role in removing PFAS. Activated carbon works through a process called adsorption, where contaminants stick to the surface of the filter media, almost like dust on sticky tape.

What makes this one of the best filters for eliminating PFAS from water is that the five stages surrounding the RO membrane contribute significantly to the effectiveness of the overall system. The sediment filter in the first stage helps prevent the activated carbon in the second and fifth stages from clogging. The fifth stage also has MineralPlus remineralization, which adds back essential minerals. The sixth stage provides UV filtration, which inactivates microorganisms like bacteria.

SpiroPure 1000 GPD Tankless RO System

The SpiroPure 1000 GPD is a tankless under sink RO water filter system with remineralization that effectively removes PFAS. The advanced RO membrane in this system is also the main component that eliminates forever chemicals in stage 3 of the filtration process. Water is forced through the filter, and PFAS are blocked and carried away in the waste water, as these molecules are rejected by the membrane's selective barrier. It's among the best water filters for removing PFAS because it has four other filtration stages that function alongside the RO membrane. Here's how the other stages work:

• Stage 1: Sediment pre-filter: The filter in this stage is effective at removing large particles like sand, dust, and dirt. Although this stage of the water filter system doesn't directly affect PFAS, it protects the filters in the next stages and prevents clogging, helping them to work efficiently.
• Stage 2: Carbon block pre-filter: Adsorption is used during this stage as activated carbon causes chemicals and organic compounds to stick to its surface. It's one of the best water filters for removing PFAS, as this stage makes it especially effective at removing long-chain substances like PFOA and PFOS due to their strong tendency to bind to carbon.
• Stage 4: Post-carbon filter: Also known as a polishing filter, the post-carbon filter uses activated carbon to improve the quality of water. After water passes through the RO membrane, the filter in stage 4 of this under sink water filter system uses adsorption to catch any remaining chemicals and traces of PFAS.
• Stage 5: Remineralization filter: Although the RO membrane removes almost all impurities, it can also pull out minerals that you want in your water, like calcium and magnesium. This final stage adds back these essential minerals to improve the taste of your drinking water, completing the process in what many consider one of the best PFAS water filters available.

SpiroPure SP-RO100MP RO Systems

The SpiroPure SP-RO100MP RO systems are under sink RO systems with a traditional tank that come with an optional air gap faucet. The air gap faucet is available in four finishes (black matte, polished chrome, brushed gold, and brushed nickel).

These water filter systems remove PFAS through their six stages of filtration. They use a physical barrier in stage 4 and adsorption in stages 2, 3, and 6. Their multi-stage process increases the chance of eliminating both long-chain and short-chain PFAS molecules.

The first stage consists of a sediment filter that traps rust, dirt, and other particles. Although this doesn't directly affect the removal of PFAS, it does help prevent clogging. This makes it one of the best ways to ensure that the carbon filters and the RO membrane in the water filter function properly.

In stage 2, the water passes through a granular activated carbon (GAC) filter that adsorbs chlorine and PFAS. This reduces cloudiness and improves taste, enhancing the quality of drinking water. Stage 3 also uses adsorption to remove PFAS. This stage uses a carbon block filter made of compressed powder activated carbon (PAC), whose greater surface area targets smaller molecules, allowing it to further reduce unwanted contaminants.

The core of this under sink water filter system is stage 4. This stage of the water filter uses an RO membrane, which is considered to be the best way to remove PFAS from water. It's like a layer with holes that are so tiny that only pure water molecules are able to fit through, leaving unwanted impurities behind. After the water is purified, a remineralization filter in stage 5 replenishes minerals, and the final stage uses a post-carbon polishing filter to remove any traces of contaminants.

Removing PFAS from your drinking water starts with choosing the right filter. Reverse osmosis systems, especially when combined with activated carbon and remineralization stages, can effectively remove these contaminants. Whether you're looking for a countertop or under sink PFAS water filter system, All Filters stocks a selection of high-quality products at cost-effective prices. Explore our selection of RO systems or contact our customer support team for more information about the best PFAS water filters.