Waterpik · Dental Floss
Waterpik Ultra Water Flosser
Lower-concern oral care device; no known PFAS triggers, but Waterpik makes no public PFAS statement.
The Waterpik Ultra uses standard dental-device materials (ABS plastic, silicone, stainless steel) with no known PFAS coatings or water-repellent treatments. Waterpik publishes no PFAS policy or testing.
Shop Waterpik on Amazon →Material
ABS plastic, silicone seals, stainless steel components
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
The full breakdown
What it's made of and why it matters
The Waterpik Ultra's main body is ABS plastic, a rigid engineering thermoplastic chosen for durability and impact resistance rather than flexibility. The water reservoir and internal tubing are also ABS or similar food-grade plastics. The nozzle tip is stainless steel, and seals are silicone rubber. ABS does not contain BPA or common phthalates by design, and it is not intended for food contact or heating, which are the primary leaching pathways for ABS.
The brand's record and disclosure
Waterpik, owned by Church and Dwight, does not publish a public PFAS reduction commitment or third-party safety certifications specific to this device. The company has no known product recalls related to chemical contamination. The product is marketed as a dental device and cleared by the FDA as a Class II medical device, which involves manufacturing oversight but does not mandate disclosed chemical testing.
How it compares in its category
Water flossers occupy a niche between traditional string floss (no chemical exposure) and mouthwash devices (liquid ingestion risk). The Waterpik Ultra is the category leader and faces minimal direct-contact chemical exposure because water is the active medium, not the device material itself. Competitor models (Panasonic, Oral-B) use similar ABS and silicone construction with comparable safety profiles.
If you buy it
Replace the rubber seals every 6-12 months to prevent microbial biofilm buildup in stagnant water. Use distilled or boiled water if your tap water is hard to reduce mineral deposits inside the reservoir. Store upright in a dry location after each use. Do not expose the main unit to temperatures above 140F; the seals and plastic may degrade or warp.
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/mold growth in water reservoir
Stagnant water in the reservoir can harbor Legionella or mold if the unit is not emptied and dried between uses. This is a maintenance issue, not a material defect, but remains the most plausible health pathway for this device.
Silicone seal degradation and particulate shedding
Silicone rubber seals can degrade over 1-2 years of regular moisture exposure, potentially releasing fine particles into the water stream. No reports of harm from this for Waterpik, but seal replacement is recommended preventively.
BPA/phthalate leaching from ABS plastic
ABS formulations used in consumer dental devices are typically BPA-free and phthalate-free. No documented leaching incidents for Waterpik Ultra exist in public records or FDA reports.
Heavy metal leaching from stainless steel nozzle
Stainless steel does not leach nickel, chromium, or other metals in brief oral contact with distilled water. Risk is theoretical only under extreme acidic conditions not present in the mouth.
Off-gassing or VOC emission from plastic housing
ABS is not typically a significant VOC or formaldehyde source when stored and used at room temperature. No odor complaints or respiratory concerns have been reported for this product.
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 dental floss 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.