Our main system

Reverse osmosis filtered drinking water in San Francisco, California.

A dedicated system under the kitchen sink, with its own drinking-water faucet. Choose a tank or tankless option with personal guidance and installation by an independent licensed plumber.

For your household Drinking water · Coffee and cooking · Less reliance on bottled water

Tankless under-sink reverse osmosis unit

The tankless option. One compact unit in the cabinet under the sink.

Reverse osmosis system with filter stages and a storage tank

The tank option. Filter stages and a small storage tank, also under the sink.

What to consider

Your daily routine Drinking water, coffee, and cooking at a dedicated faucet.

Your kitchen Cabinet space, faucet location, and any electrical requirements.

Your equipment Documented capabilities, maintenance, and warranty details.

We explain the options and requirements before purchase. A plumber confirms installation suitability.

The system

Two options: a tankless unit, or filter stages with a separate storage tank. Both go under the sink and feed a dedicated faucet at the counter. We help you compare the options and check equipment requirements. Follow the manufacturer's filter-replacement and maintenance instructions.

What it costs

Two RO options

Traditional tank RO$499
Tankless RO$699

Traditional tank RO: $499 equipment only. Tankless RO: $699 equipment only. Plus applicable tax; any delivery charge is confirmed before purchase. Installation is quoted and paid for separately.

Get Your Free Water Assessment

The tap you drink from deserves its own system.

Asked about this system

RO provides filtration at a dedicated drinking-water faucet. Product capabilities vary. We explain the selected system's documented performance so you can compare it with other options.

A dedicated faucet is usually located next to your main kitchen tap. Your plumber confirms whether an existing opening is suitable or a new hole is required.

You choose and hire an independent licensed plumber. They quote, schedule, and complete installation directly with you, and you pay them separately. We supply your equipment and installation instructions, and can share plumber options. You may also use your own appropriately licensed plumber.

Confirm any landlord, building, or association permissions. Your plumber should assess installation suitability before purchasing when compatibility is uncertain.

No refrigerator or ice-maker connection is included automatically. Ask your plumber about compatibility, additional equipment, and installation pricing.

Follow the manufacturer's filter-replacement and maintenance instructions. We explain the selected system's schedule and replacement-filter options before purchase.

Start with a free conversation

A free phone consultation about your preferences, household, and kitchen setup.

Get Your Free Water Assessment

Or call (415) 915-6366

See the full service area