PUR Plus 11 Cup Water Filter Pitcher
Low concern; standard carbon filters unlikely to contain PFAS, though the brand provides no verification.
PUR's pitcher relies on activated carbon and ion-exchange resin, materials not linked to PFAS. The brand hasn't disclosed PFAS testing or detailed housing materials.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Activated carbon and resin filter media, plastic pitcher housing
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Bacterial growth in pitcher housing and filter media
All pitcher filters can harbor bacteria if not cleaned weekly and filters not replaced on schedule. PUR's housing design includes a reservoir; stagnant water or damp filter cartridges left in place too long increase risk of Legionella or coliform proliferation, especially in warm climates.
Resin saturation and reduced contaminant removal
Ion-exchange resin exhausts after filtering the rated gallon volume; if filters are not replaced on time, water quality drops and some contaminants may pass through. This is not a toxicity hazard but a performance failure that can indirectly increase exposure to chlorine or sediment.
Inadequate testing and disclosure of sourced filter materials
PUR does not publicly disclose third-party testing for PFAS, heavy metals, or other contaminants in the activated carbon or resin sourcing. While the brand is certified by NSF, the absence of material-level transparency leaves potential supply-chain risks unverified.
What’s reassuring
Safe base material
Made from ceramic, mineral, or natural fiber with no PFAS risk.
BPA & bisphenols
PUR pitcher housing is not reported to leach BPA or phthalates under normal cold-water storage. The plastic is not heated and exposure is to room-temperature filtered water. No recalls or third-party testing has documented leaching from this specific model.
Source: FDA ↗Filter media degradation and microplastic shedding
Activated carbon and resin beads do not typically shed microplastics when used as intended in cold water. Overuse, physical damage, or improper cleaning can degrade the filter cartridge, but no data suggests significant particle release from PUR Plus filters under normal conditions.
The full breakdown
What it's made of and why it matters
The PUR Plus 11 Cup uses activated carbon and ion-exchange resin in the filter cartridge to reduce chlorine, sediment, and some dissolved impurities from tap water. The pitcher housing is plastic (likely polypropylene or copolymer) that holds filtered water between uses. Activated carbon is inert and widely considered safe; resin beads do not leach under normal cold-water conditions. The plastic housing is not heated and sits at room temperature, minimizing leaching risk from the pitcher itself.
The brand's record and disclosure
PUR (owned by Helen of Troy) is a mainstream NSF-certified brand with a long market presence and no documented recalls related to housing leaching or filter contamination. The company does not publicly detail PFAS testing or mitigation on this model, leaving uncertainty about filter material sourcing. PUR has faced no major lawsuits or regulatory actions specific to water pitcher safety, and third-party testing has not revealed unusual contaminants in filtered water from this line.
How it compares in its category
Pitcher filters like PUR compete with Brita, ZeroWater, and others using similar carbon-resin technology. PUR Plus models are mid-range in cost and filter longevity (40-60 gallons per cartridge, typical for the category). All pitcher filters carry the same fundamental risks: bacteria growth if not cleaned regularly, and filter saturation if overused. PUR's NSF certification is standard in the category and does not distinguish it as higher or lower risk than major competitors.
If you buy it
Replace filters every 2-3 months or after the recommended gallon count to prevent bacterial colonization and reduced effectiveness. Wash the pitcher and lid weekly with warm soapy water, and dry thoroughly before refilling. Do not use the pitcher for hot water, and store in a cool, dry place away from direct sunlight. If you notice cloudy water, off-odors, or slower flow, replace the filter immediately; these are signs of saturation or microbial growth.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- PUR has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Water Filters
ZeroWater
Culligan 12-Cup Water Filter Pitcher with ZeroWater Technology
Activated carbon and ion-exchange resin filter media
Bacterial growth in reservoir if filter unmaintained or water stored too long
Limited concern
Filter cartridge degradation and particle escape if overfilled or misseated
Limited concern
Ion-exchange resin saturation without visible warning
Moderate concern
Lower concern; filters are designed to remove PFAS, not introduce them.
✓Naturally PFAS-free material
ZeroWater
22 Cup Ready Read Water Filtration Dispenser
Ion-exchange resin cartridge, plastic dispenser housing
Bacterial growth in filter housing
Limited concern
Ion-exchange resin particle shedding into water
Limited concern
Mineral scale buildup and mold on external surfaces
Limited concern
Cartridge disposal and resin environmental burden
Moderate concern
Lower concern. PFAS-free claim backed by standard certifications.
✓Verified PFAS-free by a third party
Generic
Reverse Osmosis System (generic)
Bacterial growth in storage tank and tubing
High concern
BPA & bisphenols
Limited concern
Semipermeable membrane integrity failure
Moderate concern
Chlorine damage to membrane and pre-filters
Limited concern
Low PFAS risk from the filter mechanism itself.
✓Lab test found no PFAS
More water 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.