ZeroWater · Water Filters
Culligan 10 Cup Pitcher
Lower-concern water filter; PFAS removal is the stated purpose, but no third-party verification of filtration claims.
ZeroWater pitchers use activated carbon and ion-exchange resin filters designed to reduce dissolved contaminants, including PFOA and related compounds. The pitcher body is plastic (typically polystyrene), which does not inherently contain PFAS.
Brand says: “ZeroWater's marketing emphasizes removal of PFOA and other contaminants; company has stated the filtration system removes ions including PFAS-related compounds.”
Shop ZeroWater on Amazon →Material
activated carbon filter cartridge, BPA-free plastic pitcher body
Brand disclosure
Brand claims PFAS-free
Lab data
No public lab test
Why this grade
Brand-stated PFAS-free
The brand states the product is PFAS-free (self-declared).
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 ZeroWater pitcher body is plastic (BPA-free formulation stated by manufacturer). The filter cartridge contains activated carbon, ion-exchange resin, and coconut-shell media. Activated carbon is chemically inert under normal use and does not leach into water when properly manufactured and maintained. The plastic housing itself is not designed to contact boiling water or sustained heat, so leaching risk from the pitcher body under typical cold-water storage is minimal.
The brand's record and disclosure
ZeroWater markets itself as PFAS-focused (removing PFOA and PFOS from drinking water). The brand provides no published third-party certifications (NSF, WQA) for this specific pitcher model in publicly available records. No recalls or documented leaching incidents for this pitcher are on record. The company's PFAS removal claims are aspirational but lack independent lab verification visible to consumers.
How it compares in its category
Pitcher filters in this category (Brita, PUR, ZeroWater) all rely on activated carbon and ion-exchange media; ZeroWater emphasizes total dissolved solids (TDS) reduction rather than microbial safety. Unlike reverse-osmosis systems, pitcher filters do not remove bacteria or viruses and require consistent cartridge replacement to avoid microbial biofilm growth inside the housing. ZeroWater's lack of NSF certification is a notable gap compared to some competitors.
If you buy it
Replace the filter cartridge every 2-3 months or when TDS meter (often included) shows saturation; do not reuse cartridges. Hand-wash the pitcher body weekly with warm (not hot) soapy water and rinse thoroughly to prevent mold or bacterial buildup in crevices. Store filled pitcher in the refrigerator; do not leave filtered water sitting at room temperature for more than 24 hours. Never use boiling water to fill or clean the pitcher, as plastic degradation is possible at sustained high temperatures.
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.”
Microbial growth (bacteria, mold) in pitcher housing
Pitcher filters do not sterilize water and can harbor biofilm if not cleaned regularly or if cartridges are not replaced timely. Crevices in the spout and lid interface are common problem areas.
Activated carbon filter degradation and bypass
Once saturated, the carbon cartridge loses adsorption capacity and contaminants (including chlorine, some pesticides) can pass through unfiltered. ZeroWater's TDS meter helps users identify saturation, but users must act on it.
Plastic housing leachates (non-BPA)
The pitcher is marketed as BPA-free and no documented cases of phthalate or other plasticizer leaching from this model are on record. Cold-water storage poses minimal risk.
Bacterial regrowth if water stored too long
Filtered water lacks residual chlorine and becomes a growth medium for bacteria if stored unrefrigerated beyond 24 hours. This is a use and storage issue, not a manufacturing defect.
Inadequate contaminant removal claims without verification
ZeroWater claims broad PFAS removal but provides no NSF or independent lab certification visible to consumers. Users rely on manufacturer claims and included TDS meter, neither of which confirms PFAS-specific removal.
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.
Formulations and coatings change between production runs. Always check the current label before buying.
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.