Brew 120 Cups of Coffee with empirical water +
FREE Starter Bundle
The official water of
2025 US Brewers Cup!
Brew the best coffee of your life with the #1 brew water for coffee champions.
To ensure your success, your order includes 1-on-1 coaching, brew guides, a masterclass, community access, & more.
USA ORDERS SHIP FREE!
Starting at 42¢ per cup.
FREE Starter Bundle With Your 1st Order
Click each item to learn more.
No silica
Recommended: Include Silica
Silica not suitable for use
in coffee machine boilers.
Silica not suitable for use in coffee machine boilers.
🔁 Concentrate refills ship every 60 days
⏸️ Pause, cancel or adjust frequency anytime
Try it risk-free for 60 days. If you're not happy, we'll refund you, no questions asked. Experience the coffee you've been waiting your whole life for!
Features
Huge Sweet Spot
Ultra forgiving brew water, so you can achieve tasty brews with ease.
Adustable Acidity
Adjust the acidity of your coffee on the fly, for a bright or balanced cup.
Brew It All
Compatible with coffee, espresso and tea for all-in-one versatility.
Our Signature Water Profiles
Water is the lens through which we appreciate specialty coffee.
GLACIAL PROFILE
Elevate the clarity &
complexity of your coffee.
SPRING PROFILE
Enhance the body and
richness of your coffee.
To create these two contrasting lenses, we took inspiration from fine, naturally occurring glacial and spring waters.
Each profile consists of a concentrate set, and makes water for 5 brew types:
General Coffee & Tea
Light Roast Coffee
Medium Roast Coffee
Dark Roast Coffee
Espresso
Takes under a minute to mix brew water from concentrates!
Our Key Ingredient
While testing mineral profiles, we noticed one thing in common between the profiles that performed best.
They all contained an insoluble mineral, not found in any available coffee water product.
Also known as calcium carbonate, limestone is our key ingredient, a source of calcium with no unwanted impurities.
To dissolve limestone, we carbonate, agitate and decarbonate our mineral water mixtures, emulating nature's own process.
The result? Outlier levels of sweetness, clarity and aromatics without the usual harshness in your brew.
Minerals
When you brew coffee, much of what you taste comes from the interaction between minerals and coffee grounds.
With the right amount of each mineral, a good brew of coffee becomes much more likely.
Calcium
Brings out sweetness and primary flavor notes.
Magnesium
Contributes bright acidity and savory undertones.
Sodium
Increases sweetness and warmth in the flavor profile.
Chloride
Cleans up off-notes, minimizing roast defects and muting funk.
Sulfate
Increases flavor definition, bringing those bag notes into clear view.
Bicarbonate
Attenuates acidity. Adjust to your desired level with the provided buffer concentrate.
Carbonate
Once dissolved in water, carbonate converts to bicarbonate.
Potassium
A touch of potassium adds a refreshing quality to the water.
Silica
Typically found in artesian water sources, silica is associated with enhancements to mouthfeel.
Note: If you don't find it in fine natural mineral water, you won't find it in empirical water.
The Choice of Champions
"I’m blown away by the glacial and spring profiles," says Julien.
"Both profiles increase the clarity of the cup immensely, and the acidity is more effervescent and round... Overall I think Empirical Water really showcases coffees in a very special way."
What Should You Expect From empirical water?
✔️ Sweet
❌ Bitter
Our mineral profiles target sweet flavors in your specialty coffee, allowing you to extract your coffees harder than ever without bitterness.
✔️ Smooth
❌ Astringent
Enjoy incredible satin-smooth mouthfeel, like simply no other brew water on the planet for coffee, espresso and tea.
✔️ Flavor Notes
❌ Funk
empirical water mutes funk and off-notes, shining the spotlight on clean deliciousness, especially in new experimental process coffees.
Excerpts From Verified Customers
What's In Your Order?
Everything you'll need to brew the best coffee, espresso and tea you've ever tasted. All measuring equipment is included — You won't even need a scale.
Glacial Profile Concentrate Set
$40 Value
Spring Profile Concentrate Set
$40 Value
Glacial Profile Brew Water
$10 Value
Spring Profile Brew Water
$10 Value
Extraction Booster Concentrate
$5 Value
50 mL Measuring Cylinder
$5 Value
100 mL Measuring Cylinder
$5 Value
Precise Measuring Syringe
$5 Value
Pour Over Method PDF
FREE
Cupping Method PDF
FREE
Coffee Storage Method PDF
FREE
Icon and Wordmark Stickers
FREE
Brew With The Community
Join the exclusive space where innovative coffee nerds share their expertise.
Supercharged Support
12 Months 1-on-1 Brew Consulting
Speed-run the path to great coffee with guidance from the product creator via DMs.
30 Minutes Live Brew Coaching
We'll go over how to achieve YOUR flavor profile goals using the equipment and ingredients you already have.
30 Minutes Brew Video Analysis
Record a brew video and send it over! We'll analyze it frame by frame to help you brew YOUR ideal cup.
Brew Water Masterclass
60 minute pre-recorded interview in podcast form + 15 minutes of practical info in written form.
FAQ
Do the water profiles resemble the natural sources they are named after?
Yes, we took direct inspiration from the world's finest naturally occurring glacial and spring water sources, then fine-tuned those profiles for exquisite coffee brewing performance.
All of our mineral profiles are diverse, containing the full spectrum of essential minerals in naturally occurring mineral water.
What makes nature-inspired water profiles so good for brewing coffee?
The difference is in the mineral composition, which consists of hardness, alkalinity, and other mineral ions.
Glacial and spring water sources come with suitable amounts of hardness and alkalinity, without the excess amounts of chloride and sulfate you normally encounter in other coffee water products and poor quality tap water.
To achieve our record-low levels of chloride and sulfate, we emulate the natural process for dissolving limestone, i.e. calcium carbonate—the #1 best-tasting source of mineral hardness—not found in any other coffee water product on the market.
Can I drink empirical water?
You may drink the brew water, and most people say it tastes slightly better than normal drinking water. That said, the water truly shines when used to brew coffee.
What's in the water?
empirical water consists of purified water and food-grade minerals which occur naturally in glacial and spring mineral waters, in comparable amounts.
Ingredients: Deionized water, sodium bicarbonate, calcium carbonate, magnesium sulfate, magnesium chloride, calcium chloride, potassium bicarbonate.
How will I dilute the concentrates?
Dilute the concentrates just like any other coffee water product: Using distilled water, available at most grocery stores.
You may also use reverse osmosis, or deionized water, which you can produce from any other water using a Zero Water filter pitcher.
Will I need to descale?
Only once every one thousand boiler cycles.
Is your question not answered here? Try the live chat at bottom right!
Customer Reviews
This is my favorite water concentrate for coffee.
I love all of the profiles! The spring profile works wonders with filter coffee and everything—from naturally processed to washed—across all roast levels. It produces a very sweet cup with a decent amount of body, and the acidity is adjustable due to the droplets. The glacial profile works great across the board. I have a Flair 58, so with the glacial profile it’s nearly impossible to get a bad shot, even if I grind too fine, because of the water’s forgiving nature. I opted for the version with added silica, which, in my assessment, enhances the mouthfeel by making the water more “moist,” for lack of a better term.
Best of all is the support and constant kindness from Arby. Whenever I’ve had a question, he’s always there to answer and help out. I’ll definitely order more, as it offers something for my coffee experience I’ve never had before which is assistance with dialing in my coffee with water.
Consistent and affordable solution for dynamic, rich, thick brews that doesn't sacrifice clarity/transparency. Forgiving without sacrificing punchiness. Really couldn't be happier.
After making my own concentrates for a few years, the difference when using the glacial concentrate was noticeable. I'll definitely be re-ordering soon!
this water takes the guess work out, no percentages, no guesswork
Very easy to use. I would say so far the Glacial produces a cup similar to 42g (one packet dissolved in 100g of dem water into 5 L) of light TWW. Have not cupped side by side, but will soon.
Love the thing. Tried everything before (apax, perfect water, tww, lotus etc) but Empirical water really hits the spot for me I use spring for Ultralights (substance,minmax, Tpc) and glacial for daily nordic lights works perfect everytime
I have been making up water for coffee for many years. I started out mixing up my own minerals, then switched to a couple of different commercial brands, and have stuck with one that I have used for the last two years. I recently tried Empirical Water, and we put it to a taste test. We tried two Empirical Waters (glacial v1.5 and spring v1.1) and my regular coffee water. We made two different coffees with all three waters, and there was five of us tasting with a wide range of coffee proficiency. Everyone preferred the Empirical Water with both coffees, with a split between glacial and spring. If you take your coffee seriously and you haven't tried Empirical Water, do yourself a favor and give it a try—and do a taste test.
This water is amazeing. Makes the best cup you can find
Noticed a bump in sweetness. Have been using baking soda and epsom salts. This glacier formula is a nice improvement.
