SupaNatural · Pitcher Water Filters & Cartridges
Soma 10 Cup Water Pitcher
Lower PFAS concern; glass + carbon filtration standard, but brand makes no PFAS disclosure.
Soma water pitchers use borosilicate glass (PFAS-unlikely) and activated carbon filters, which typically contain no added PFAS in the filter media itself. However, SupaNatural/Soma provides no public statement on PFAS in components or coatings.
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Glass pitcher with replaceable activated carbon filter cartridge
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The Soma pitcher consists of borosilicate glass (chemically inert, non-leaching) and a replaceable activated carbon cartridge. Glass does not degrade with water contact or temperature exposure and will not shed microplastics or heavy metals into filtered water. The activated carbon core is the only consumable component and should be replaced every 40 gallons or roughly 2 months to maintain efficacy.
The brand's record and disclosure
SupaNatural has not published formal safety certifications (NSF, WQA) or public PFAS testing data for the Soma line. No recalls or established safety incidents are documented for this pitcher model. The brand maintains a sustainability marketing position but does not make specific disclosures about filter composition, source of activated carbon, or third-party testing results.
How it compares in its category
Glass-based pitchers (Soma, Brita, PUR) are safer than plastic-pitcher alternatives (BPA/BPS leaching risk when refilled repeatedly). Most brands use similar food-grade activated carbon cartridges; Soma's lack of NSF certification is typical of mid-market brands but distinguishes it from certified competitors like PUR and Brita. Replacement cost and cartridge availability are standard for the category.
If you buy it
Replace cartridges every 40 gallons or 2 months to prevent bacterial growth and maintain filtration performance. The glass pitcher can be hand-washed; do not use abrasive scrubbers on the interior seams. Store in a cool, dry place; glass is stable at all normal household temperatures. Verify cartridge availability before purchase, as supply disruptions have been reported for some SupaNatural product lines.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Bacterial colonization in filter cartridge (unmaintained)
Activated carbon cartridges, if not replaced on schedule, can develop biofilm and bacterial growth that reduces filtering effectiveness and may degrade water quality. This is standard risk across all carbon-pitcher filters and is prevented by strict 40-60 day replacement intervals.
Activated carbon cartridge composition disclosure
SupaNatural does not publicly specify the source, processing method, or contaminant removal spec of its activated carbon. Some low-cost cartridges may use coal-derived or insufficiently activated carbon; this cannot be assessed without manufacturer data.
Microplastic shedding from filter housing or seals
The glass pitcher itself does not shed microplastics. The cartridge housing and seals are typically food-grade plastic or rubber; no documented incidents of microplastic release from Soma cartridges are on record, but seals can degrade over time with repeated refill cycles.
Borosilicate glass fracture risk (thermal shock)
Borosilicate glass is highly thermal-shock resistant and suitable for room-temperature water storage. Risk of breakage is mechanical (impact) rather than chemical or thermal; this is a handling issue, not a safety hazard.
Housing leachables from cartridge casing
The plastic cartridge housing itself is not NSF-certified by SupaNatural; if the casing is polycarbonate or similar resin, minimal BPA-type leaching is possible under cold-water storage but cannot be ruled out without manufacturer specification.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
More pitcher water filters & cartridges grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.