02 · Drinking water

Drinking water systems

Drinking-water systems go under the kitchen sink and feed their own faucet. They take out most dissolved solids so water for drinking, coffee, ice and cooking tastes clean.

What it fixes

Flat or salty taste
High dissolved solids
Cloudy ice
Bottled-water habit

What it doesn't

They don't fix stains, smell or scale in the rest of the house. That's a whole-home job.
On a well with iron or sulfur, they work best with a whole-home system ahead of them.

Drinking water systems

Top pick for drinking water

Tankless RO

800 gallons a day, 7 stages, and no storage tank under your sink.

Compact tankless reverse osmosis with seven stages of filtration and built-in alkaline remineralization. It works to remove heavy metals, chlorine and dissolved solids, and it adds beneficial minerals back in. The coconut-carbon filter gives you a smoother, fresher taste. Its 2:1 drain ratio wastes far less water than a standard RO, and with no storage tank it frees up space under your sink.

Best for: Anyone who wants cleaner water for drinking and cooking

Details and specs

5-Stage Reverse Osmosis

Classic under-sink RO at a lower price.

The time-tested under-sink setup: five filter stages and a small storage tank so a glass of water is always ready.

Best for: Great drinking water at a lower price.

Details and specs

Side by side

Specs are general. Your test and your home decide the right size and setup.

Comparison of drinking water systems
Feature	Tankless RO	5-Stage Reverse Osmosis
Storage tank	No	Yes
Faucet	Dedicated	Dedicated
Under-sink space	Compact	Takes more room
Filter changes	Cartridge swap	Housing swap

Questions

About drinking water systems

Can I connect RO to my fridge?

Usually, yes. We check the distance and your fridge connection during the test and include it in the quote if it makes sense.

Does RO waste water?

All RO sends some water to the drain to rinse the membrane. Newer tankless units send less than older designs. We'll show you the ratio for the unit we recommend.

Test first. Fix it right.

Find out what's in your water.

Free water test. Results at your kitchen sink in 20 minutes.

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