Wf537 Refrigerator Water Filter Replacement vs Refrigerator Water Filter LT700P: which is safer?
LG Refrigerator Water Filter LT700P is our pick, better on PFAS and on the overall hazard picture.
Aqua Fresh
Wf537 Refrigerator Water Filter Replacement
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleBacterial growth in filter media or housing
PossibleCarbon dust or resin particle release into water
PossibleDegradation and bypass of contaminants over time
Our pick
LG
Refrigerator Water Filter LT700P
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleBacterial growth in carbon media
PossibleCarbon dust or fines in dispensed water
Where these two actually differ
- We flag Bacterial growth in filter media or housing, Carbon dust or resin particle release into water and Degradation and bypass of contaminants over time on the Aqua Fresh and not on the LG.
- We flag Bacterial growth in carbon media and Carbon dust or fines in dispensed water on the LG and not on the Aqua Fresh.
- The Aqua Fresh is activated carbon and/or ion-exchange resin filtration media where the LG is Activated carbon, polypropylene filter media, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
Both products run through the same public rubric, which covers materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More refrigerator filters, see the full ranking