Commandment I: Fresh Water Only : The Foundation of Your Brew
Let’s get one thing straight right out of the gate: you can buy the most expensive, ethically sourced, small-batch roasted beans in the world, but if you’re brewing them with funky water, you’re basically throwing your money down the drain.
Welcome to the first entry in our series on the Ten Commandments of Coffee. We’re stripping things back to basics because, honestly, great coffee shouldn't be a mystery. It should be a standard. And at gods favorite coffee, we believe that the journey to a divine cup starts long before the water hits the grounds. It starts with the water itself.
If you caught our previous post about the Philosophy of the Perfect Pour, you know we don’t mess around when it comes to quality. Today, we’re diving deep into Commandment I: Fresh Water Only.
The 98% Reality Check
Here is a fun fact for your next dinner party: your cup of coffee is roughly 98% water.
Think about that for a second. Only 2% of what’s in your mug actually came from the bean. The rest is whatever came out of your tap, your fridge, or that plastic bottle you’ve had sitting in the sun. If 98% of your sandwich was made of soggy, lukewarm cardboard, it wouldn't matter how premium the ham was: you’d still be eating a cardboard sandwich.
Coffee is a solvent. When hot water meets coffee grounds, it’s performing a complex chemical extraction. It’s pulling out oils, acids, sugars, and caffeine. If that water is already "full" of chlorine, fluoride, or heavy minerals, it doesn’t have the room or the chemical "grip" to pull the good stuff out of the beans.
The Tap Water Trap
Most of us grew up drinking tap water, and in many places, it’s perfectly safe. But "safe to drink" and "good for coffee" are two very different bars.
City water is often treated with chlorine or chloramine to keep it sterile. While that’s great for not getting sick, it’s terrible for your palate. Have you ever brewed a cup and noticed a weird, chemical "swimming pool" aftertaste? That’s the chlorine. It flattens the bright acidity of a light roast and turns a dark roast into a bitter, ashy mess.
Then there’s the issue of "hard" vs. "soft" water.
- Hard water is packed with minerals like calcium and magnesium. In small amounts, these are actually great (more on that in a second). But in high concentrations, they cause scale buildup in your machine and lead to "chalky" tasting coffee.
- Soft water (or distilled water) is the opposite. It’s too pure. Without any minerals to help the extraction process, the water becomes "aggressive," often resulting in a cup that tastes flat, salty, or weirdly sour.
Finding the Goldilocks Zone
So, if tap water is a gamble and distilled water is a no-go, what’s a coffee lover to do? You need to find the "Goldilocks Zone" of water quality.
According to the Specialty Coffee Association (SCA), the ideal water for brewing should be clean, odor-free, and have a balanced mineral content: specifically around 150 mg/L of Total Dissolved Solids (TDS).
You don’t need a lab coat to get this right. Here’s the casual guide to fixing your water:
1. The Charcoal Filter (The Bare Minimum)
If you aren't doing anything else, at least use a Brita or a fridge filter. These are great at removing chlorine and some heavy metals. It won’t fix the mineral balance, but it will get rid of that "pool water" taste. It’s the easiest way to give your gods favorite coffee beans a fighting chance.
2. Bottled Spring Water
Not all bottled water is created equal. Look for "Spring Water" rather than "Purified Water." Spring water usually has a natural mineral balance that sits right in that sweet spot for extraction. Avoid "Distilled" or "Reverse Osmosis" water unless you plan on adding minerals back in manually.
3. Third Wave Water
If you want to go full coffee nerd (and we support that), look into mineral packets like Third Wave Water. You drop a packet into a gallon of distilled water, and it creates the scientifically perfect "recipe" for coffee extraction. It sounds extra, but once you taste the difference in a bag of our GFC The Awakening, you’ll never go back.
Freshness Matters (Yes, Even for Water)
Commandment I doesn't just say "Filtered Water." It says Fresh Water Only.
Water that sits in your kettle overnight loses oxygen. Stale, de-oxygenated water leads to a flat-tasting brew. Always start with cold, fresh water from your filter. Don't just re-boil the leftovers from yesterday's pot.
The same goes for the water sitting in your espresso machine’s reservoir. If it’s been sitting there for three days, it’s picking up dust and absorbing odors from your kitchen. Dump it out, rinse it, and refill it. Your taste buds will thank you.
Why We Care So Much
At gods favorite coffee, we put a lot of work into our roasts. We spend hours dialing in the profile to make sure you get those notes of chocolate, citrus, or toasted marshmallow. When you use bad water, you’re essentially putting a veil over all that hard work.
We want you to experience the coffee exactly how we intended it: bold, clean, and satisfying. Think of water as the stage, and the coffee as the performer. You can have a world-class singer, but if the stage is falling apart and the acoustics are trash, the performance is going to suffer.
The Bottom Line
You don't need to spend thousands on a reverse osmosis system to enjoy a better cup of coffee. You just need to be intentional.
Your homework for this week:
- Smell your tap water. If it smells like bleach, stop using it for coffee.
- Try a side-by-side taste test. Brew one cup with tap water and one with filtered or spring water. Use the same beans, the same ratio, and the same method.
- Notice the difference in clarity. Notice how the flavors "pop" more with the clean water.
Once you see the light, there’s no going back. Commandment I is the foundation. Without it, the other nine commandments don't even matter.
Stay caffeinated, keep it simple, and remember: if the water isn't fresh, the brew isn't right.
Ready to test your new water setup? Grab a bag of our signature roast at gods favorite coffee and taste what you've been missing.