Should I use RO water or softened water for my espresso machine?

RO water with remineralization is ideal. Softened water (high sodium, zero hardness) can actually under-extract and cause corrosion in some machines. Our remineralization stage adds back the right amount of minerals for optimal extraction.

Will filtered water make a noticeable difference in my coffee?

Most people notice an immediate difference — especially if they're currently using Columbus tap water. The chloramine removal alone produces a cleaner, more aromatic cup. The scale protection is a longer-term benefit.

Does water quality affect cold brew?

Yes. Cold brew extracts over 12–24 hours, so chloramine has more time to affect flavor compounds. Filtered water produces a smoother, less bitter cold brew.

What about tea? Does water quality matter as much?

Arguably more. Tea is more sensitive to mineral content than coffee. Hard water over-extracts tannins, producing bitterness. Filtered water with the right mineral balance produces a cleaner, more nuanced cup.

Can I connect my RO system to my coffee maker?

Yes. We can plumb the RO system to a dedicated faucet and also connect it to your refrigerator ice maker, coffee maker, or any other appliance that benefits from filtered water.

Better coffee & tea

Better Coffee Starts with Better Water.

You can spend $500 on an espresso machine and $25 on specialty beans — but if your water is wrong, your coffee will be wrong. Water is 98% of every cup.

98%

Of your coffee cup is water

18–25

Grains per gallon — Columbus water hardness

Faster scale buildup in espresso machines vs. soft water

See our alkaline RO system

Why Columbus water makes bad coffee

Columbus tap water has two problems for coffee: it's hard (15–20 grains per gallon of calcium and magnesium) and it's treated with chloramine. Both affect your coffee in different ways.

Chloramine suppresses flavor extraction. The same chemical that makes your tap water smell like a pool interferes with the delicate aromatic compounds in coffee and tea. You end up with a flat, muted cup — even with excellent beans.

Hard water causes scale. Calcium and magnesium deposit inside your espresso machine, coffee maker, and kettle — reducing efficiency, affecting temperature consistency, and eventually causing expensive damage. A machine that should last 10 years may need service in 3–4 with Columbus tap water.

Signs your water is affecting your coffee

Your coffee tastes flat or lacks complexity

Chloramine suppresses volatile aromatic compounds during extraction. The result is a muted, one-dimensional cup regardless of bean quality.

White scale inside your kettle or coffee maker

Visible scale means minerals are depositing inside your machine. What you see on the outside is a fraction of what's building up inside.

Your espresso machine needs descaling every few months

With Columbus water hardness, machines need descaling 3–4x more often than with soft or filtered water. This shortens machine life significantly.

Your tea tastes bitter or astringent

Hard water over-extracts tannins from tea leaves, producing bitterness. Filtered water produces a cleaner, more balanced cup.

Your pour-over or French press tastes inconsistent

Mineral content affects extraction rate. Inconsistent water chemistry produces inconsistent results even with identical technique.

You use bottled water for your coffee but tap for everything else

Many serious home baristas already do this — which means they already know the difference. An RO system makes it automatic.

What the right water does for your coffee

Cleaner extraction

Without chloramine interfering, coffee oils and aromatic compounds extract fully and cleanly. You taste what the roaster intended.

Consistent results

RO water has a consistent mineral profile every time. Your recipes work the same way every morning.

Protected equipment

Zero scale buildup means your espresso machine, coffee maker, and kettle last longer and perform better. No descaling, no service calls.

Better tea and other beverages

The same water that improves coffee also improves tea, pour-over, cold brew, and any other water-based beverage.

What the Specialty Coffee Association recommends

The SCA water quality standard for brewing calls for total dissolved solids of 75–250 mg/L, zero chlorine or chloramine, and a pH of 6.5–7.5. Columbus tap water exceeds the TDS range and contains chloramine. Our alkaline RO system with remineralization hits the SCA target range consistently.

Frequently asked questions

Taste the difference in your first cup.

A free in-home water test shows you exactly what's in your Columbus tap water — and what an RO system would remove. Most people are surprised by the numbers.

Schedule a free water test Call (614) 476-8711