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Reverse osmosis · Drinking water · Designer faucets
Reverse osmosis — bottled-quality water from your own tap.
Bottled water gets expensive and fridge filters only do so much. An under-sink reverse osmosis system removes what carbon alone can’t — delivered from its own dedicated faucet. We install it clean, quote it upfront, and maintain it for years.

with service call
What’s your water telling you?
Drinking water options
Three ways to better drinking water — we’ll help you pick
Every home’s water is different. Your tech walks you through the real options for your water — after a test, not a sales pitch.
4-Stage Reverse Osmosis
- Four stages — sediment, carbon, membrane, polish
- 50 or 75 gallons/day, chrome or brushed nickel
- Its own dedicated faucet at the sink
Costs less
Halo Hydro Point
- 2-stage under-counter filter
- No storage tank needed
- Honest pick when RO is more than you need
Designer RO Faucet
- Ten designer finishes, two styles
- Wellspring & Billet collections
- Match your existing kitchen hardware
Reverse osmosis, Hydro Point, or whole-house — the honest breakdown
Same facts, tidy columns — find the row that sounds like your house.
Reverse osmosis
Best for: maximum purity
A membrane removes dissolved solids carbon can’t catch — the most thorough drinking-water fix.
- Removes more — lead, cysts, dissolved solids, chlorine taste
- Output — 50 or 75 gallons per day
- Its own faucet — plus an optional fridge/ice line
- Designer finishes — ten options across two styles
- Easy upkeep — cartridge & membrane swaps on schedule
RO sends some water to drain while filtering — modern 4-stage systems keep it to a minimum.
Halo Hydro Point
Best for: good city water, simpler needs
A compact 2-stage under-counter filter — better water without a full RO system.
- Compact — fits tight under-sink spaces
- No tank — nothing bulky to fit
- No drain water — filters without waste
- Lower cost — less than a full RO
It won’t match RO’s purity on tough water — but for many Sonoma County homes it’s all you need. We’ll tell you honestly.
Whole-house filtration
Best for: taste & odor at every tap
Carbon systems (Halo 5, H2 Zero, Big Blue) clean up chlorine taste and odor house-wide.
- Every tap — chlorine taste & odor gone
- Scale control too — on the Halo 5 & Hybrid, so appliances last longer
- Pairs well — add a softener or RO for the complete setup
- Sized to your water test — with a code-compliant install
- All major brands — we service more than we sell
Everything we do
RO & drinking water, end to end
Systems We Install
We install under-sink reverse osmosis and drinking-water filters — sized to your household and installed clean, with the faucet finish that matches your kitchen. Every install is sized after an on-site water test, done to code, with honest upfront pricing approved by you first.
- 4-Stage RO — 50 GPD Chrome
- 4-Stage RO — 50 GPD Brushed Nickel
- 4-Stage RO — 75 GPD High-Output
- Halo Hydro Point (2-Stage)
- Designer RO Faucet Upgrade
- Fridge / Ice-Maker Line
- Customer-Supplied RO Install
- RO Drain & Sink Drilling
- Granite / Quartz Faucet Drilling
- Whole-House + RO Pairing
Service & Maintenance
We keep your RO performing — membranes and cartridge sets on schedule, plus repairs for slow flow, drain issues, or a constantly-running system.
- RO Cartridge Set — GRO-2550
- RO Cartridge Set — GRO-475
- RO Membrane Replacement
- Hydro Point Cartridge Swap
- Slow-Flow Diagnosis
- RO Drain Repair
- Faucet Replacement / Upgrade
- Annual Filter Change
- System Repair (All Brands)
- Water Testing & Re-Test
How it works
From first test to clean water — without the runaround
1
Free water test
We test your water on-site at no charge with your service call — hardness, chlorine, what’s actually in it. Real arrival window, tech’s name & photo by text.
2
The right system, not the priciest
We recommend what your water actually needs — with a fixed price before any work begins.
3
Clean install
To code, with proper bypass and connections — work area left cleaner than we found it.
4
Backed in writing
Your new RO system carries its full manufacturer warranty — plus our Make-It-Right Guarantee on workmanship.

Why Simeone for your RO
An RO is only as good as its install.
Simeone Plumbing, Inc. has installed under-sink drinking water systems across Sonoma County since 2007. We drill granite, quartz, and stainless cleanly, set the faucet you chose, and connect everything to code — including an optional line to your fridge or ice maker. Not sure RO is right? See all filtration options.
- Honest advice — sometimes a simpler 2-stage filter is all you need
- Fixed price approved by you before any work begins
- Code-compliant installation, proper bypass and drain
- Annual maintenance plans so it keeps performing
- Licensed — CA C-36 #890196
Reviews
Water quality work, in our neighbors’ words
★★★★★
“Very professional and did an amazing job. Gina and Dominic are fantastic — cannot recommend them enough.”
MO
★★★★★
“Great service, took care of an emergency in a very timely manner. Highly recommended!”
KM
★★★★★
“Amazing people! They really saved my butt on this one. They were able to quickly come out and line a pipe. Very professional. Did an amazing job.”
Y
Good to know
Reverse osmosis questions, answered straight
What does reverse osmosis remove?
The membrane catches dissolved solids that carbon can’t — lead, cysts, chlorine taste and odor, and more, depending on staging. We’ll show you the spec sheet for the exact system we recommend.
Does RO waste water?
Some water goes to drain while the membrane filters; modern 4-stage systems are far more efficient than older units, and a clean install keeps it to a minimum.
How often do filters and the membrane need changing?
Cartridges roughly once a year; the membrane every two to three years. A maintenance plan keeps it automatic so flow and taste stay strong. See our water filtration overview for the full picture.
Can you install RO in my existing sink?
Almost always — we drill granite, quartz, or stainless cleanly, or use an existing sprayer or soap hole. That’s plumber work, and it’s what we do.
Ready for better water? Let’s test yours.
Free water test with any service call — across Sonoma County.
