Express WaterEZRO5 Countertop Reverse Osmosis System
Renter-friendly RO with no plumbing work, delivering roughly one gallon an hour.
$165
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Usability
Usability
The EZRO5 exists for people who cannot drill a countertop or cut into a supply line, and on that narrow brief it works: four-point install, a diverter on the aerator, no permanent modification. Express Water deserves credit for stating the real throughput in the first line of its own product page rather than hiding behind the 100 GPD membrane rating - half a gallon to a gallon an hour is what you actually get, and that is a jug-filling appliance, not a tap. The 7.75 lb weight makes it the easiest system here to move between apartments. What the buyer trades away is speed, counter space and any independent verification, since no countertop model in the range carries an NSF listing. It also will not fit sprayer-style faucets at all, which rules out a meaningful share of modern kitchens.
- No plumbing work at all - installs on a threaded faucet aerator in minutes
- Lightest system in the range at 7.75 lbs, easy to take to a new address
- Express Water publishes the real throughput rather than only the membrane rating
- Standard four-stage RO architecture with replaceable quick-connect cartridges
- Cheapest route into reverse osmosis Express Water sells
- Half a gallon to one gallon per hour in practice, despite a 100 GPD membrane rating
- Incompatible with sprayer faucets and any aerator that is not threaded and removable
- Occupies permanent counter space next to the sink
- No NSF listing
- Discharges one to four gallons per gallon produced, the worst ratio in the range
- One-year warranty
The EZRO5 is a four-stage countertop reverse osmosis unit that connects to an existing kitchen faucet through a diverter valve rather than to the plumbing: sediment, granular carbon, membrane and post carbon. Express Water rates the membrane at 100 GPD but states plainly that actual delivery is half a gallon to one gallon per hour. It weighs 7.75 lbs and measures 8.875 x 14 x 6.5 in, and it only works on faucets with a threaded removable aerator.
Additional information
Specification: Express Water EZRO5 Countertop Reverse Osmosis System
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Questions answered from our data
How much does a reverse osmosis system cost?The 69 reverse osmosis systems we list run from $165 to $3,779, with a median of $367.
How long do reverse osmosis filters last?Of the 69 reverse osmosis systems we list, 64 state a filter life; the most common is 6-12 months (62).
Does reverse osmosis remove fluoride?63 of the 76 reverse osmosis systems we list claim to reduce fluoride.
Do water filters remove lead?120 of the 296 systems we list claim to reduce lead.
