Brondell · Countertop Filters
Brondell Cypress Nanotrap Filter HF-32
Lower concern. No PFAS disclosure found; carbon filters typically lower risk.
Brondell's HF-32 uses activated carbon filtration, a material class not inherently associated with PFAS. No public PFAS claims or test data available from brand.
Shop Brondell on Amazon →Material
Activated carbon and fiber filtration media
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The Cypress HF-32 uses activated carbon and fiber media to absorb chlorine, taste, odor, and some chemical contaminants. Activated carbon is a well-established, non-toxic filtration substrate that does not leach harmful compounds into water under normal use. The fiber support matrix holds the carbon in place; neither component is known to degrade or release microplastics into filtered water at the flow rates and temperatures typical of countertop use.
The brand's record and disclosure
Brondell does not publicly disclose PFAS removal claims for the Cypress HF-32; the product is marketed for chlorine and taste reduction. The brand does not appear in major product safety recalls or regulatory enforcement actions specific to this filter model. Brondell holds NSF certification for some water filter products, though independent verification of HF-32 claims is not widely documented in publicly available sources.
How it compares in its category
Countertop activated carbon filters are among the lowest-risk water treatment products because activated carbon itself is inert and non-leaching. The HF-32 is comparable to generic carbon cartridge filters in material safety profile. Its main differentiator is the claimed NanoTrap coating on the carbon; no third-party testing of this coating's leaching behavior under typical domestic conditions is publicly available, but activated carbon-based filters as a class carry minimal material hazards.
If you buy it
Replace the filter every 2-3 months or per manufacturer guidance, or sooner if water flow slows significantly; standing water in unmaintained filters can support bacterial growth. Do not expose the filter housing to temperatures above 100F or freezing, as thermal stress may crack plastic components and allow bypass. Rinse the filter housing regularly and store filters in a cool, dry place. Ensure the filter is seated properly to avoid unfiltered water bypassing the media.
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 media
Activated carbon, if not replaced on schedule, can become a nutrient source and harbor site for bacteria, especially if the filter sits unused or water sits in the housing. This is a use-and-maintenance issue, not a material defect; strict adherence to replacement intervals mitigates risk.
Housing material leaching (plastics)
The filter housing is typically polycarbonate or polyethylene. No recalls or contamination reports for the HF-32 housing are on record. Standard food-grade plastic housing is expected to be BPA-free in modern filters, though Brondell does not explicitly disclose BPA status for this model.
Coating or adhesive leaching from NanoTrap media
Brondell claims a proprietary NanoTrap coating enhances filtration; no independent testing of leaching from this coating is publicly available. Activated carbon itself is inert, but any binder or coating must be stable in aqueous environments. The absence of reported issues does not confirm safety, but standard carbon filter coatings are designed to be water-stable.
Microplastics from filter media breakdown
Fiber and carbon media do not fragment into microplastics under normal countertop water pressures. Risk increases only if the filter is physically damaged or improperly seated, allowing direct bypass. No published analysis of HF-32 microplastic shedding exists.
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.
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More countertop filters 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.