PFAS in Water Filters, Which Brands Grade Best and Worst

Based on available materials and public disclosure data, water filter pitchers and filtered bottles from brands like Soma, Santevia, LifeStraw, and Clearly Filtered currently earn the strongest model-based estimates in our database, each landing in the "Excellent" tier with a 100/100 safety score. The Soma Sustainable Pitcher and the Santevia Glass Water System stand out in particular because their construction leans on glass, stainless steel, and disclosed filter media rather than the undisclosed plastics and coatings that tend to drag down scores elsewhere in the category.

None of this means any product is certified "PFAS-free" in a laboratory sense, and no filter on the market today can be called "safe" outright. What we can say, based on reviewed materials, brand disclosures, and third-party testing where it exists, is that some products show a much lower concern profile than others. This guide breaks down how the major water filter and filtered-bottle brands in our database compare, what separates a strong grade from a weak one, and which products are worth a closer look if you're trying to limit PFAS exposure in drinking water. For a full breakdown of filtered products by category, our product finder lets you search by brand or material.

Summary comparison table

Product	PFAS grade (model estimate)	Verdict
Santevia Glass Water System	Excellent, 100/100	Glass carafe design, lower concern based on disclosed materials
Soma Sustainable Pitcher	Excellent, 100/100	Plant-based housing, strong brand transparency
LifeStraw Home 7-Cup Glass Pitcher	Excellent, 100/100	Glass construction, well-documented filter media
LifeStraw Home Award-Winning Glass Pitcher	Excellent, 100/100	Consistent with brand's glass pitcher line
Clearly Filtered 40oz Insulated Bottle	Excellent, 100/100	Stainless build, brand claims third-party filter testing
Soma Further Push Pull Water Bottle	Excellent, 100/100	Lower concern based on disclosed cap and body materials
Hydro Flask 32oz Wide Mouth Travel Bottle	Excellent, 100/100	Stainless steel body, straw cap flagged for ongoing review
Aqua Vault Stainless Steel Filter Water Bottle	Excellent, 100/100	Stainless construction with integrated filter cartridge

Every product listed above carries the same top grade in our system, which reflects disclosed materials and publicly available data, not an independent lab certificate confirming zero PFAS content. Treat the grade as a relative ranking tool, not a guarantee.

How we grade, and what "Excellent" actually means

Our grades are model-based estimates built from publicly available materials disclosures, brand statements, packaging data, and, where it exists, third-party lab testing. A 100/100 "Excellent" score means that based on available materials and data, a product shows no evidence of PFAS found in reviewed sources and uses construction choices (glass, uncoated stainless steel, disclosed filter media) that are generally associated with lower PFAS risk. It does not mean the product has been independently lab-tested for PFAS absence, and it does not mean the product is "safe" in a medical or regulatory sense. Any association between PFAS exposure and health outcomes discussed in this guide reflects correlation found in public health research, not proven causation for any individual product.

Water pitchers, the strongest category overall

Pitcher-style filters dominate the top of our grading list, largely because glass carafes avoid the coating and gasket questions that come up with plastic housings. The Santevia Glass Water System uses a glass reservoir with a ceramic-and-mineral filtration stack. Santevia states its filters are designed to reduce a range of contaminants, though the brand's own PFAS-specific claims have not been independently verified in the data we reviewed. Pros include a fully visible glass body (nothing hidden behind opaque plastic) and a filter life that's easy to track. The main con is price relative to plastic pitchers, and the fact that replacement filter cartridges still require periodic disclosure checks since formulations can change between production runs.

LifeStraw's glass pitcher line, including the LifeStraw Home 7-Cup Glass Pitcher, the Award-Winning Glass Pitcher, and the standard Glass Water Filter Pitcher, all land in the same Excellent tier. LifeStraw states its membrane microfilter is tested against a broad contaminant list, and the brand has published some third-party test summaries for certain contaminants, though not every claim in that disclosure is PFAS-specific. The glass housing is the standout feature here, it sidesteps the plastic leaching questions that dog cheaper filter jugs. Cons are mostly practical. Glass pitchers are heavier, more fragile if dropped, and generally cost more upfront than a basic plastic model.

The Soma Sustainable Pitcher and the Soma Full Circle Home 3-Piece Pitcher Set round out the strong pitcher showing. Soma has built its brand identity around plant-based, BPA-free materials, and the company states its housings avoid the additive classes most associated with PFAS contamination. That's a brand claim, not an independently verified lab result, but it lines up with the disclosed bill of materials we reviewed. Pros include a lighter housing than glass competitors and a recognizable, widely available filter cartridge. Cons are that "plant-based" plastic blends are a newer material category overall, and long-term third-party data on their filter cartridge composition is still thinner than for older, more established filter brands.

If pitchers are your primary interest, our whole-house filters roundup is a useful next stop for anyone comparing point-of-use pitchers against point-of-entry systems for a full home.

Filtered bottles, strong but more variable

Filtered water bottles earn some of the same top grades as pitchers, but the category has more moving parts, literally, since caps, straws, and filter cartridges are usually made from different materials than the bottle body.

The Clearly Filtered 40oz Insulated Bottle and the Clearly Filtered 32oz Stainless Bottle with Cap and Straw both carry Excellent grades. Clearly Filtered has publicly stated that its filter media is tested against an extended contaminant list that includes certain PFAS compounds, and the brand has published some test summaries to support this. That is closer to a verified, documented claim than most competitors offer, but it still reflects the brand's own commissioned testing rather than a fully independent, repeated third-party audit available in our source review. Pros are a genuinely broad stated contaminant list and stainless construction. Cons include a shorter filter lifespan than pitcher cartridges and a higher per-bottle cost.

Hydro Flask shows up repeatedly in the Excellent tier, including the 32 oz Wide Mouth Travel Bottle with Flex Straw Cap, the 24oz Standard Flex Straw Cap, the Micro Hydro Mini Bottle, the 32 oz Lightweight Flex Straw Bottle, and the filter-equipped Epic Water Filters "The Answer 2.0" Hydro Flask Filter. The stainless steel bodies are the consistent strength across the line, and double-wall vacuum insulation doesn't typically involve PFAS-related coatings. The flex straw caps are the component worth watching, straw and gasket materials vary by production run, and while current disclosures place these bottles in the Excellent tier, that's based on the materials disclosed at time of review, not a standing guarantee across every manufacturing batch.

Soma's bottle lineup, including the Further Push Pull Water Bottle, the 24oz Stainless Steel Water Bottle, the 25oz Glass Water Bottle, and the Soma V2 Bottle, all grade Excellent as well. The glass bottle in particular benefits from the same material simplicity that boosts pitcher scores, less surface area for hidden plastic components. The stainless options carry the standard caveat about cap and seal materials varying by batch.

Other Excellent-tier filtered and insulated bottles worth noting include the S'well London Chimney Water Bottle, the CamelBak Eddy+ Bottle, and the Aqua Vault Stainless Steel Filter Water Bottle, which pairs a steel body with an integrated filter cartridge. If you're shopping the broader insulated bottle market beyond filtration specifically, our insulated travel mugs roundup covers adjacent products that don't necessarily filter but share similar material questions.

What to avoid

None of the specific low-graded water filter products appear in our current database excerpt, so we won't invent a "worst" brand here. But based on available materials and data across the broader water filtration market, a few red flags consistently correlate with weaker grades industry-wide, and they're worth checking for on any product not covered above.

• Undisclosed filter media composition. If a brand won't specify what's inside the cartridge, that's a transparency gap, not a safety verdict, but it does mean our model (and you) have less to go on.
• Vague "PFAS-free" marketing without supporting documentation. A brand stating a product is PFAS-free is a brand claim. Unless it's paired with a named third-party lab and a dated report, treat it as marketing language rather than a verified result.
• Plastic housings with no stated resin type. Generic "BPA-free plastic" language without a resin identification code or additive disclosure tends to correlate with lower grades in our model, since it leaves open questions about coatings and processing aids.
• Straw and gasket components sold separately from the main body's material disclosure. Several otherwise strong-grading bottles carry this caveat; always check whether the cap and straw are covered by the same disclosure as the bottle body.
• No stated filter replacement testing. A filter that has never been tested against a contaminant list (PFAS-specific or otherwise) after extended use is a bigger unknown than the housing material itself.

If you're trying to limit PFAS exposure more broadly in the kitchen, it's worth looking beyond filters alone. Nonstick cookware, grease-resistant food packaging, and treated textiles are other common sources discussed in public health research. Our cast iron skillets and paper napkins and paper towels roundups cover two of the more frequently flagged adjacent categories.

Our pick

Based on available materials and data, the Santevia Glass Water System and the Soma Sustainable Pitcher are our top picks among pitcher-style filters, largely because glass construction and disclosed filter media reduce the number of open questions compared to opaque plastic competitors. For filtered bottles, the Clearly Filtered 40oz Insulated Bottle stands out because the brand has published more detailed filter testing documentation than most competitors in the same tier, even though that testing is brand-commissioned rather than fully independent in the sources we reviewed.

None of these products should be understood as "PFAS-free" or "safe" in an absolute sense. They represent the strongest model-based estimates currently available in our database, built from disclosed materials, brand statements, and whatever third-party data exists. If your priority is minimizing uncertainty rather than chasing a perfect score, glass and uncoated stainless steel construction, paired with brands that publish specific filter testing data, is the most defensible starting point. For a side-by-side look across more products and categories, our product finder is the fastest way to compare options, and the whole-house filters page is worth checking if you're thinking about filtration at the point of entry rather than at the tap or bottle.

Frequently asked questions

Does a 100/100 "Excellent" grade mean a water filter is guaranteed free of PFAS?

No. The grade is a model-based estimate built from disclosed materials, brand statements, and available third-party data. It means reviewed sources showed no evidence of PFAS in the product's disclosed materials, not that an independent lab has certified the product PFAS-free. Treat it as a relative ranking, not a guarantee.

Are glass water pitchers always a lower-concern choice than plastic ones?

Glass housings generally remove one layer of uncertainty since they avoid plastic coating and additive questions tied to the main reservoir. That said, caps, seals, and filter cartridges in glass pitchers are often still made from plastic or silicone, so the full product still depends on how those components are disclosed and tested.

If a brand claims its filter is tested against PFAS, is that a verified fact?

It depends on who did the testing and whether the results are published. Some brands commission their own lab testing and publish summaries, which is more documentation than a bare marketing claim but still short of fully independent, repeated third-party verification. Always check whether a specific lab, test method, and date are cited before treating a PFAS-related claim as settled.