Express Water RO5 Review

5-stage RO with UV and alkaline filter options.

Updated 2026-03-09 Independently reviewed
Express Water RO5
8.6/10
$249
Limited Offer — Check Today's Price

Overview

The Express Water RO5 is a 5-stage reverse osmosis system with optional UV and alkaline add-ons. Removes 99% of contaminants including lead, arsenic, and fluoride. Fast flow rate and 3.2-gallon tank for ample filtered water on demand.

Like what you see? Check the latest Express Water RO5 deal on Amazon.

Limited Offer — Check Today's Price

Pros & Cons

Pros

  • ✓5-stage RO
  • ✓UV optional
  • ✓Alkaline optional
  • ✓Removes 99%
  • ✓Fast flow
  • ✓3.2-gal tank
  • ✓Good for large families

Cons

  • ✗Add-ons increase cost
  • ✗Standard waste ratio
  • ✗Bulky under sink

Ready to buy? Express Water RO5 is available now with a special offer.

Limited Offer — Check Today's Price

Specifications

Type 5-stage RO
Capacity 75 GPD
Stages 5 (+ UV/alkaline options)
Removes Lead, arsenic, fluoride
Tank 3.2 gallon
UV Optional
Alkaline Optional
Warranty 1 year

Our Verdict

The best under-sink RO with upgrade options for UV and alkaline water.

8.6 / 10
Limited Offer — Check Today's Price

Related Comparisons

Ranked List

Best Under-Sink Water Filters 2026

Our ranked list of the best under sink water filters for 2026. Tested and reviewed independently.

 Overview

Compare Under-Sink Water Filters

Compare under sink water filters side by side. Filter by specs, price, and features.

 Compare

Compare PureTap Products — Pick Two to Compare

Choose any two products to see a detailed side-by-side comparison. Compare specs, features, and value.

 Head to Head

Waterdrop G3P800 Tankless RO vs Express Water RO5 — Which Should You Buy?

Side-by-side comparison of Waterdrop G3P800 Tankless RO and Express Water RO5. We compare specs, performance, and value to help you decide.

 Head to Head

Aquasana AQ-5200 vs Express Water RO5 — Which Should You Buy?

Side-by-side comparison of Aquasana AQ-5200 and Express Water RO5. We compare specs, performance, and value to help you decide.

 Head to Head

iSpring RCC7AK 6-Stage RO vs Express Water RO5 — Which Should You Buy?

Side-by-side comparison of iSpring RCC7AK 6-Stage RO and Express Water RO5. We compare specs, performance, and value to help you decide.

 Head to Head

APEC ROES-50 vs Express Water RO5 — Which Should You Buy?

Side-by-side comparison of APEC ROES-50 and Express Water RO5. We compare specs, performance, and value to help you decide.
Limited Offer — Check Today's Price