Brondell · Countertop Filters
Brookstone Brondell Circle Reverse Osmosis Water Filtration System RC100
Reverse osmosis filters inherently lower PFAS concern; no disclosure found.
RO systems use carbon and sediment filters designed to remove contaminants including some PFAS, though effectiveness varies by model. Brondell makes no PFAS claims; standard plastic housing carries minimal risk for this product type.
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Carbon block and sediment filter media, plastic housing
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 RC100 uses a multi-stage system with carbon block and sediment filter media housed in food-grade plastic (likely polypropylene or similar) with standard brass/stainless fittings. Carbon block filters are chemically inert during normal operation and do not leach into water under typical countertop pressure conditions (reverse osmosis operates at 50-100 psi, well below degradation thresholds). The plastic housing does not contact the filtered water directly; incoming water passes through media stages first, minimizing housing leachate risk.
The brand's record and disclosure
Brondell is a subsidiary of Coway and holds NSF/ANSI 42 (aesthetic) and NSF/ANSI 53 (health effects) certifications for the RC100 line, indicating third-party testing for contaminant reduction claims. The brand does not publish detailed material composition or heavy-metal/leachate testing reports publicly, which is typical for the category but limits transparency. No recalls, lawsuits, or verified contamination incidents are on record for this specific model. Brondell does not make PFAS reduction a marketing claim, consistent with the fact that reverse osmosis addresses PFAS incidentally rather than as a primary design goal.
How it compares in its category
Reverse osmosis countertop systems like the RC100 are significantly lower-risk than pitcher filters or faucet-mounted carbon-only units because they use pressure-driven separation rather than relying solely on adsorption. Pitcher filters accumulate bacterial biofilm if not replaced every 2 months, a hazard the RC100 avoids via its sealed housing. The RC100 sits in the mid-range for countertop RO systems; premium models offer TDS meters or permeate monitoring, while economy alternatives may have weaker plastic housings prone to cracking under pressure variations.
If you buy it
Replace sediment and carbon filters every 6-12 months depending on source water quality; check the manual for your water hardness rating, as hard water shortens filter life and reduces flow. Store the unit indoors at 40-100 degrees Fahrenheit; freezing will crack the plastic housing and damage seals. Inspect plastic connections monthly for hairline cracks or weeping; replace any visibly degraded tubing immediately. Run the system for 2-3 minutes weekly if unused for more than a week to prevent stagnant water in the storage tank, which reduces bacterial growth risk in the reservoir.
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 leachate (BPA/phthalates)
Brondell does not disclose housing material composition, but countertop RO systems typically use food-grade polypropylene or polyethylene, both of which do not contain BPA by standard formulation. No third-party testing or complaints of plastic taste or off-odors are documented for the RC100 model.
Bacterial and mold growth in storage tank
All countertop RO systems with integrated storage tanks risk biofilm formation if the tank sits unused for extended periods or temperatures exceed 75 degrees Fahrenheit. The RC100's sealed design mitigates this compared to open pitchers, but stagnation remains a maintenance concern requiring weekly flushing if the system is idle.
Carbon filter dust or media shedding
Quality carbon block filters do not shed media particles into water under normal operating pressure. No consumer complaints or test data suggest media degradation for the RC100; however, if a filter cartridge cracks during installation, carbon dust may briefly appear in output water.
Heavy metals in filter media or housings
NSF/ANSI 53 certification requires testing for lead and cadmium leachate from filter components. The RC100 holds this certification, implying compliance, though Brondell does not publish individual test reports. No recalls for heavy-metal contamination are on record.
Pressure-related rupture or seal failure
Plastic housings in low-cost RO systems can crack under thermal stress (freezing) or manufacturing defects. While no widespread failure recall exists for the RC100, users in cold climates should insulate or drain the system in winter to prevent rupture and water leakage.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 62% 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.
Safer alternatives in Countertop Filters
ZeroWater
40-Cup Glass Water Filter Dispenser
borosilicate glass, plastic pitcher housing, ion-exchange resin cartridge
Lower concern on PFAS, but brand silence on cartridge composition is a missed transparency opportunity.
✓Bare metal or glass, no coating at all
ZeroWater
Culligan ZeroWater Technology 22-Cup Ready Water Filtration Dispenser
Plastic housing, activated carbon + ion-exchange resin filter media
Lower concern, but verify filter cartridge specs before relying on PFAS claims.
✓Brand claims PFAS-free (unverified)
LARQ
PureVis Pitcher
Borosilicate glass pitcher, activated carbon filter cartridge
Lower PFAS concern for the pitcher itself; verify filter cartridge sourcing if purchasing replacements.
✓Bare metal or glass, no coating at all
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.