Name: Express Water RO5DX
Brand: Express Water
SKU: B00J2DGTD8
Price: 152.68 USD
Availability: InStock
Rating: 4.6 (6148 reviews)

Expert Review Analysis

The Express Water RO5DX is a 5-stage under-sink reverse osmosis system that produces 50 gallons of purified water daily, featuring NSF/ANSI 58 certification for TDS reduction and structural integrity. It includes a 4-gallon storage tank, chrome faucet, and pre-assembled filters to simplify installation for households of four or more people.

✓ Best for: Households of 4+ people seeking reliable daily drinking and cooking water. Homes with specific contaminant concerns like lead, chlorine, fluoride, or PFAS. Users prioritizing NSF certification for verified water quality and safety. Kitchens with limited under-sink cabinet space due to the system's small footprint. Users willing to commit to 6-12 month filter replacement cycles for long-term quality✗ Not ideal for: Households with very high water usage exceeding 50 gallons per day capacity. Users seeking comprehensive NSF certification for all 158 claimed contaminants. Individuals unwilling to perform regular filter maintenance every 6-12 months. Users concerned about wastewater production inherent to reverse osmosis systems

Pros

✓NSF/ANSI 58 certified for verified TDS reduction and safe water-contact materials
✓Removes up to 99.99% of contaminants including lead, fluoride, and PFAS

Best Seller Rank History

Now#14Best#3Worst#33 +6

Lower = better sales rank

Specifications

Design

Height15.0 inches mm

Width5.0 inches mm

Length14.0 inches mm

Weight31.0 pounds g

Features

Tank Capacity4 gallons liters

Filter TypesSediment, GAC, Carbon Block, RO Membrane, PAC, Alkaline Remineralization

Faucet FinishChrome

Leak DetectionYes (automatically shuts off water flow)

Pre-assembledYes (over half the system)

General

ModelRO5DX

BrandExpress Water

ColorWhite

CertificationNSF/ANSI 58

Warranty1-year limited

Performance

Production Capacity50 gallons per day (GPD) GPD

Flow Rate0.8 gallons per minute (GPM) ml/min

Filtration Stages5-stage (alkaline configuration includes 6 total filter stages)

TDS Reduction93–99% %

Total Contaminants ReducedUp to 1,000 impurities and 158 specific contaminants contaminants

Filtration

TDS Reduction93-99%

Contaminants ReducedUp to 1,000 impurities and 158 specific contaminants

Maintenance

Filter Life12 months

Operating Conditions

Feed Water Temperature Range40-85°F

Dimensions & Weight

Height15.0 inches

Width5.0 inches

Depth14.0 inches

Weight31.0 pounds

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Express Water RO5DX

Expert Review Analysis

Best Seller Rank History

Specifications

Design

Features

General

Performance

Filtration

Maintenance

Operating Conditions

Dimensions & Weight

Research Sources

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