LG Replacement Refrigerator Water Filter-LT700P
Lower concern for a water filter. Material as recorded is not linked to PFAS.
The LT700P uses activated carbon filter media and plastic housing. Activated carbon is not a material linked to PFAS. LG has no PFAS statement on record for this product.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Activated carbon filter media, plastic housing
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Bacterial growth in filter housing
If the filter is not replaced on schedule or if the refrigerator dispenser is infrequently used, stagnant water can support microbial biofilm in the activated carbon bed and plastic housing. This is a use-and-maintenance issue, not a material defect, and is mitigated by regular replacement.
Filter bypass or incomplete sealing
If the cartridge is not inserted firmly or the housing is cracked, unfiltered water may bypass the activated carbon, defeating the filter's purpose but not creating a safety hazard unless the source water is already contaminated with pathogens that chlorine is the only defense against.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
BPA & bisphenols
Food-grade polypropylene used in refrigerator filter housings does not contain BPA by standard; cold water and low residence time (minutes) do not trigger leaching of plasticizers. No recalls or test data for the LT700P indicate leachate contamination.
Source, FDA ↗Activated carbon dust or particles in water
A new or poorly seated filter may shed fine carbon particles into the first few pitchers of dispensed water. This is cosmetic and harmless; rinsing the dispenser reservoir before first use, or running the filter for 30 seconds before drinking, reduces visibility. Not a toxicity hazard.
Heavy metals
Activated carbon has limited efficacy against lead, mercury, or arsenic compared to reverse osmosis or ion exchange; the LT700P is not marketed as a heavy-metal removal device. If your water supply has known lead contamination, this filter is insufficient; verify municipal water quality or use a certified lead-reduction filter.
Source, FDA ↗The full breakdown
What it's made of and why it matters
The LT700P contains activated carbon as its primary filtration medium, a well-established material that adsorbs chlorine, taste, odor, and some synthetic organic compounds from water. The housing is plastic, typically polypropylene or similar food-grade polymer, chosen for corrosion resistance and cost. Activated carbon does not leach harmful chemicals into water under normal refrigerator filter conditions (cold water, low pressure, short residence time), and the plastic housing is not exposed to heat that would trigger leaching of BPA or phthalates.
The brand's record and disclosure
LG does not publish detailed material composition or third-party certification data for this filter model. The company has no known major recalls or safety controversies specific to the LT700P. LG does not explicitly disclose whether activated carbon or housing materials contain PFAS, but activated carbon itself is not a source; if PFAS entered the filter, it would be from water already contaminated. Standard industry practice for refrigerator filters involves no intentional PFAS inclusion.
How it compares in its category
Refrigerator filters like the LT700P are among the lowest-risk water treatment products because they operate at cold temperatures and are replaced every 6 months, preventing long-term material degradation. Activated carbon is the standard medium across brands (Whirlpool, GE, Samsung). The LT700P does not claim NSF or WQA certification on the product label, which is typical for OEM filters; third-party certification is more common in standalone pitcher or faucet filters but not necessary for basic chlorine removal.
If you buy it
Replace the filter every 6 months or per manufacturer guidance to prevent bacterial biofilm growth inside the cartridge and housing; standing water in an unmaintained filter can harbor microorganisms. Do not attempt to clean or reuse the cartridge; activated carbon is not regenerable by rinsing. Ensure the filter seats properly in the dispenser to avoid bypass leakage. If water odor or taste returns before 6 months, replace early; this signals saturation and reduced effectiveness, though not a safety failure.
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
- LG has made none
Formulations change between production runs, so check the current label. How we grade.
More refrigerator 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.