A plumbed espresso machine and a sparkling-water tap: where they go and what they need.
How to add a plumbed espresso machine, a sparkling water spout or chilled water at a kitchen island in Scottsdale and Cave Creek homes. Water, drain, power and cabinet planning, and what changes on a slab.
- Reading
- 4 minutes
The short answer
Both upgrades come down to the same three things: a filtered cold-water line, a place for the waste or drain, and a cabinet with room for equipment you’ll never see.
- Typical supply tubing size for plumbed espresso machines
- 1/4 in
- Utilities to plan: water, drain, power
- 3
- Sparkling taps need a small CO₂ cylinder in the cabinet
- CO₂
- Island plumbing in a slab home means cutting or surface-routing
- Slab
Where and how can I add a plumbed espresso machine?
A plumbed machine takes water from a line instead of a tank, and many send waste to a drain. The easiest place is on a wall run at the edge of the kitchen, where water, drain and power are already close. In a Scottsdale kitchen with a tall appliance cabinet, a built-in coffee center beside the fridge is the cleanest route.
On the island is possible but harder. In a slab home, which describes most of Gainey Ranch, Grayhawk and DC Ranch, water and drain must come up through the floor. That means cutting the slab or surface-routing, and it should be done only after scanning for post-tension cables. If the island already holds a prep sink, you can often tap the same lines.
Four ways to put water where you want it
The right answer depends on whether your island already has plumbing and how much cabinet space you can give up.
- 01
Built-in plumbed espresso machine
Arizona fit: 5 out of 5- Best for
- Coffee-center walls, tall cabinets and butler’s pantries
- Why it works
- Connects to a filtered cold line and a drain, so there is no tank to refill and it stays out of the way.
- Watch out
- Needs a dedicated outlet and filtered water. With Valley hard water, a softener or cartridge is not optional.
- 02
Sparkling and chilled water tap
Arizona fit: 4 out of 5- Best for
- Entertaining, and families buying lots of bottled water
- Why it works
- A small tap on the counter supplies still, chilled and sparkling water. The equipment sits under the sink.
- Watch out
- Needs a CO₂ cylinder, a chiller, filtration and a cabinet about the size of a wine box. Plan for cylinder swaps.
- 03
Pot filler over the range
Arizona fit: 3 out of 5- Best for
- Large-pot cooking and gas ranges
- Why it works
- A cold-water line to the wall behind the range saves carrying heavy pots from the sink.
- Watch out
- The wall has to be opened, and the shutoff valve must be reachable. Install before the backsplash.
- 04
Island bar or prep sink
Arizona fit: 2 out of 5- Best for
- Islands with no existing drain
- Why it works
- Island sinks need venting without a wall behind them, and code-compliant solutions exist.
- Watch out
- In a slab home this is a slab-cut project. Ask your plumber how venting will be done.
Do it yourself
DIY: plan the cabinet before you buy the equipment
The equipment is small. The planning is what goes wrong. Spend an hour with a tape measure first.
- Time
- 1 hour
- Cost
- Free
You will need
- Tape measure
- Installation sheets (PDF)
- Pencil and paper
Download every installation sheet
Look for supply size, drain, voltage and cabinet cut-out dimensions.
Draw the cabinet interior
Show where water enters, where the drain exits and where the outlet sits. Leave room to reach shutoff valves.
Place the filter and CO₂ cylinder
Keep them off the floor and within reach, with room to swap cartridges and cylinders.
Mark a service access
Choose a removable panel or drawer front so a plumber never has to take cabinetry apart.
Share the sketch with your designer and plumber
One page now saves a change order later.
More questions about water at the sink
Where do the filtration system and tank go if I add chilled, sparkling or hot water at the sink? Under the sink, on a shelf or on a wall bracket. Plan 12 to 18 inches of free cabinet width and mark where supply and power come in. Our kitchen and bath design team fits this into the cabinet layout.
Can I plumb a refrigerator ice maker and water dispenser in an island or bar fridge? Usually yes, if the island has a supply line and drain access, or if the unit is a drain-free design. Check the model’s instructions.
Can I add a whole-home water softener to an existing hard-water setup? Often yes. In Cave Creek homes on well water, test the water first. Our post on hard-water-proof bathroom fixtures shows what hard water does to finishes.
Before you build
Check your own city's rules
Permits, zoning and setbacks are set by the city or town, and they change. Use these official pages to confirm what applies to your lot before you order materials or sign a contract.
Check paperwork you already have
Your parcel number (APN) is printed on your county property tax statement and usually on your deed or title documents.
Or search by address
The Maricopa County Assessor lets you search by street address or owner name and returns the parcel number.
Use it on the city tools
Scottsdale, Phoenix and Cave Creek map and permit tools accept an address, and many also accept a parcel number.
These are links to official government sites, not advice. Requirements depend on your lot, zoning and the scope of work, so confirm with the city or town and your designer before you start.
Where it matters
Scottsdale
Islands in Gainey Ranch and DC Ranch are large enough for a prep sink and beverage center. Slab-cutting and scanning are part of the plan.
Cave Creek
Homes on well water should test hardness and sediment before specifying a plumbed machine. Filtration comes first.
Phoenix
Older Arcadia kitchens often have galvanized or copper lines. Have a plumber check supply condition before adding fixtures.
FAQ
Questions, answered
Where and how can I add a plumbed espresso machine?
Best on a wall run with water, drain and power nearby, such as a tall coffee cabinet. On an island it is possible, but in a slab home it usually involves a slab cut.
Where and how can I add a sparkling water spout at my kitchen island?
The tap goes through the countertop, with a chiller, filter and CO₂ cylinder in the cabinet below. It needs a cold-water line and power. If the island has no plumbing, plan for a slab cut.
Can I add a pot filler over the range, and does the wall need opening up?
Yes. The wall behind the range has to be opened to run a cold-water line. Do it before tile or backsplash goes in.
Can I add a bar sink or prep sink in an island with no existing drain?
Yes, but drain and vent must be solved. In a slab home that usually means cutting the slab, so plan with your plumber and scan for post-tension cables first.
Can I add a hot-water recirculation pump so I don’t wait for hot water in a big house?
Often yes. A recirculation pump with a return line, or a retrofit pump at the farthest sink, brings hot water faster. It is a small plumbing and electrical job.
Can I put a tankless water heater in a home that has a tank in the garage?
Usually, but gas line size, venting and electrical needs differ. A plumber should size the unit and check the gas supply before swapping.
