Brita · Shower Filters
Brita Replacement Shower Filter Shf-302
Lower-concern choice for a basic shower filter, but Brita hasn't disclosed PFAS stance.
Brita shower filters use activated carbon and plastic components typical of point-of-use filters. Activated carbon itself does not inherently contain PFAS, and shower filters don't require water-repellent coatings that often harbor PFAS.
Shop Brita on Amazon →Material
Activated carbon filter media, plastic housing
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
The SHF-302 uses activated carbon as its primary filtration media, a porous form of carbon that traps chlorine, sediment, and some volatile organic compounds through adsorption. The housing is plastic (likely polystyrene or ABS), which sits outside the water stream under normal shower conditions. Activated carbon itself is chemically inert and not a leaching concern in cold to warm shower water. The filter media degrades over time as it absorbs contaminants and becomes saturated, typically within 6 to 12 months depending on water quality and usage.
The brand's record and disclosure
Brita is a subsidiary of Tronix Holdings and primarily known for pitcher and faucet filters. The company has not made public statements specifically addressing PFAS in shower filters or their broader water filtration line. Brita holds NSF certification for some pitcher products but certification status for the SHF-302 is not widely documented in public records. The brand's overall transparency on chemical composition of replacement filters is limited, which is typical but not exceptional in the shower filter market.
How it compares in its category
Shower filters are among the lowest-risk water treatment products because they do not concentrate contaminants the way pitcher filters do and expose water only briefly to the filter media. The SHF-302 is a mid-market option with activated carbon, the most common and straightforward filtration approach; it does not employ ion exchange resins or other reactive chemistry. Competitors like Aquasana and Kohler models use similar activated carbon designs, making this category relatively homogeneous in safety profile. No major recalls or safety incidents involving Brita shower filters are on public record.
If you buy it
Replace the filter cartridge every 6 to 12 months or sooner if water pressure drops noticeably, as saturated carbon loses effectiveness and may harbor bacterial biofilm if left in service too long. Rinse the housing and check for visible mold or sediment buildup during replacement. Store replacement filters in a dry location to prevent premature activation of the carbon. Do not expose the plastic housing to temperatures above 60 degrees Celsius (140 degrees Fahrenheit) for extended periods, though normal hot shower water (typically 40-49 degrees Celsius) poses no risk.
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.”
Plastic housing leachables
The SHF-302 housing is positioned upstream of direct water contact in most configurations. No documented leaching of BPA, phthalates, or other endocrine disruptors from Brita shower filter housings has been reported. Cold and warm shower water (below 50 degrees Celsius) minimizes any theoretical leaching risk.
Bacterial biofilm growth on filter media
Activated carbon filters can develop bacterial and fungal biofilm if not replaced regularly or if the shower is used intermittently. This is a maintenance issue rather than a manufacturing hazard; replacement per label instructions eliminates this risk.
Activated carbon dust or migration
Well-manufactured activated carbon cartridges do not shed particles into water. The SHF-302 uses a contained cartridge design; no recalls or consumer reports of black water or carbon dust are documented.
Filter media saturation and contaminant breakthrough
Once saturated, the activated carbon no longer removes chlorine or other volatile organics effectively. Using the filter beyond its rated lifespan reduces its intended benefit but does not introduce new hazards; it simply ceases to filter.
Heavy metals in replacement cartridges
No credible reports or test results indicate lead, cadmium, or other heavy metals in Brita SHF-302 cartridges. Activated carbon media is not known to concentrate such metals in this product class.
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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PureAction
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More shower 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.