Refrigerator Water Filter Replacement LT800P ADQ73613401 - NSF

Our review of this refrigerator water filter replacement finds it best for households seeking proven contaminant reduction without changing their fridge. It is a straightforward swap for LG models that need ADQ73613401/ADQ73613402-compatible cartridges and stands out because it is certified to NSF/ANSI 401, 53, 42 and 372, meaning it targets a broad set of modern contaminants while preserving beneficial minerals. For anyone who values tested reduction of lead, PFOA/PFOS and certain pharmaceuticals, this filter delivers reliable performance and an easy installation routine.

Key Features

• NSF certified filtration: Certified to NSF/ANSI 401, 53, 42 and 372 so it reduces a wide range of impurities including lead, PFOA/PFOS and select pharmaceuticals.
• Deep carbon block media: Uses coconut shell carbon blocks with increased micropores for better reduction of chlorine, sediment and heavy metals while maintaining water taste.
• Fast water flow: Engineered pore structure provides smooth dispenser flow and is designed to avoid the leakage problems sometimes found with inferior replacements.
• BPA-free housing: Food-grade, lead-free housing meets NSF 372 performance expectations for materials and safety.
• Clear replacement schedule: Includes installation stickers and guidance to replace after about 200 gallons or six months to retain filtration performance.

Who It's For

This replacement filter is aimed at owners of LG refrigerators and compatible models who want an NSF-tested cartridge that targets contemporary concerns like PFAS and trace pharmaceuticals while keeping water tasting clean. It is ideal for families and renters who prefer a drop-in replacement that fits models listed as compatible and want the reassurance of third-party testing.

Customers who need ultrafast flow at unusually high demand or who use non-compatible refrigerator models should look elsewhere; the product is designed specifically as a cartridge replacement for listed LG and Kenmore lines and performance depends on the fridge plumbing and local water pressure.

Pros & Cons

Pros

• Comprehensive NSF certifications back targeted reduction of lead, PFAS and several pharmaceuticals.
• Carbon block made from coconut shell material improves taste and reduces chlorine and sediment.
• Easy, no-fuss installation with stickers to track replacement intervals.
• Constructed with BPA-free, food-grade housing for safer contact with drinking water.

Cons

• Flow performance varies by fridge and some users may notice slower dispenser flow in low-pressure setups.
• Compatibility is limited to specific LG/Kenmore models, so it is not a universal fridge filter.

Specifications

Brand	Waterdrop
Certifications	NSF/ANSI 401, 53, 42, 372
Replaces	LG LT800P, ADQ73613401, ADQ73613402, Kenmore 9490
Filter media	Coconut shell carbon block
Recommended life	Approximately 200 gallons or 6 months
Housing	BPA-free, food-grade

Our Verdict

This Waterdrop replacement is a sensible buy for LG and compatible fridge owners who want proven reductions of lead, PFAS and certain pharmaceuticals without changing dispenser behavior dramatically. It balances certified contaminant removal, durable materials and straightforward installation, making it good value for anyone prioritizing water safety and taste on a routine replacement schedule.

Frequently Asked Questions

Will this fit my LG refrigerator?
It fits LG models that list compatibility with LT800P/ADQ73613401 and many of the LMXS and LSXS series noted in the compatibility list; check your fridge model against that list before ordering.

How often should the filter be replaced?
Waterdrop recommends replacing the filter after about 200 gallons or six months, though actual life depends on local water quality and usage.

Does the filter remove PFAS and pharmaceuticals?
Yes; the cartridge is tested to NSF/ANSI 401 and 53 standards and specifically showed reduction of certain pharmaceuticals and PFOA/PFOS in third-party testing.