Skip to main content
Gentle on older plumbing, thorough with your water (650) 300-3248
Daly City Water Filtration
Dark kitchen with a compact filtration unit under the counter

Reverse Osmosis Systems

Reverse Osmosis Systems in Daly City

Drinking-water systems for kitchens across Daly City, fitted in cabinets of every age.

Great drinking water at the kitchen sink

Reverse osmosis systems in Daly City give you very clean drinking and cooking water from a dedicated faucet. Water passes through a fine membrane that removes most dissolved solids and many contaminants, along with the chloramine taste.

In older homes, RO is also a good answer to the lead question. Homes built or replumbed before 1986 may have lead solder, and older faucets can contain lead. A system certified to NSF/ANSI 58 for lead reduction takes care of it at the tap you drink from. We recommend a lab test first so you know where you stand.

Because Daly City water is already low in minerals, some people find RO water tastes very plain. A remineralizing stage adds a little back, and we are happy to bring a sample.

Fitting RO into an older kitchen

Older kitchens often have shallow cabinets, original drain lines and a garbage disposal taking up space. We look at all of it before choosing between a tank system and a compact tankless unit.

If the drain under your sink is old galvanized or cast pipe, we connect to it carefully or add a proper fitting, rather than forcing a drain saddle onto pipe that might crack.

In Westlake and Serramonte kitchens the cabinet under the sink is often shared with an old garbage disposal and a tangle of shutoffs. We measure before we arrive with anything, choose a tank or tankless unit that leaves room for cleaning supplies, and route the drain line so it never sits where it can be knocked loose.

What the install includes

A complete drinking-water station.

  • TDS and chloramine reading

    Measured before and after so you see the change.

  • Pre-filters

    Sediment and catalytic carbon to protect the membrane.

  • Certified membrane

    Sized to how much your household drinks.

  • Tank or tankless

    Chosen to fit your cabinet.

  • Dedicated faucet

    In an existing hole or a neat new one.

  • Safe drain connection

    Done carefully on older drain pipe.

  • Optional fridge line

    Clean water for ice and the dispenser.

  • Sanitized startup

    So the first glass tastes right.

How the visit goes

  1. We check

    Water readings and a good look under the sink.

  2. We install

    About two hours.

  3. We compare

    TDS at the new faucet next to your regular tap.

Questions people ask

Does RO remove lead?

Systems certified for lead reduction do. We show you the certification.

Does it waste water?

Some goes to drain. Modern systems are much more efficient, and we tell you the ratio.

How often is the membrane changed?

Usually every two to three years, with pre-filters every six to twelve months.

Why neighbors choose our RO systems

  • Certified claims only

    No vague promises.

  • Careful with old drains

    No cracked pipes under the sink.

  • Taste your way

    Remineralization if you want it.

  • Water and pipes checked first
  • One written price
  • Certified equipment
  • Two-hour visit windows

Better water for drinking and cooking

We will check your water and your cabinet and show you what RO would do.