Nobody Can Hand You Their Water, So Here's How to Find Yours

I can't hand you my water. Nobody can. Once you accept that, the mess of water advice online starts to make sense: every person giving it is describing the water they started with, for the coffee they like.

So here's where I've landed. Pick one voice you trust, start from the water you already have, and let your palate take it from there. Copying someone's mineral recipe without knowing why they built it mostly just leaves you confused.

Why can't I just give you my water?

The other day I tested my tap at 273 ppm. That's pretty high for tap water, and it's harsh. Yours might be 150. If you're lucky it's 100. But even that number doesn't tell you much. You still don't know which minerals are in there, in what proportions, or how much chlorine is along for the ride. You just know your water is a little lighter or a little heavier on minerals than mine.

That's why my best advice starts with the least exciting step. Brew your coffee with the water you have and taste it. Do you like it? Do you keep running into the same problem no matter what you change?

Where does all the confusion come from?

Once you start paying attention to water, you go looking for answers, and you find a lot of people with opinions. That person says one thing. Another says something else. Then you start wondering about their context. I hope so. What water did they start with? Are they trying to sell me something, or are they just trying to give simple advice about where to start?

That person's water isn't my water. It isn't yours either.

Then come the experiments. Start with distilled. Start with your tap. Mix the two. Everyone's version is a little different, and you end up more confused than when you started.

Pick one voice and learn why they do what they do

The fix I keep coming back to is simple. Pick somebody. Anybody you trust: me, someone else, a book, even AI. Just pick one.

Then understand why they're doing what they're doing. Know who they are and what kind of coffee drinker they are. Ask yourself why they handed you this particular recipe. Follow five people at once and you'll get five different answers, and that's not because anyone is trying to steer you wrong. That's their experience. That's their walk with coffee and with water.

Stay on one route long enough and your palate takes over. This isn't a competition. It's about you and the coffee in your cup.

What my own path looked like

I stayed on tap water for a very long time. Then I went to Third Wave Water, fell out of love with it, and came back to it.

Somewhere in there I started noticing different things in the coffees I was drinking, and my palate started telling me what was going on.

I leaned on AI for guidance too. It helped. But AI can't taste anything. It can only hand information back to you. You're the one who can taste it, try it, and decide which direction to go.

One of the biggest eye-openers was a cheap TDS meter, about ten dollars. Once you know what your coffee tastes like in your own water, or in plain spring water, which is perfectly fine, you start to think, wow, this is what my coffee can taste like. It's probably why I wasn't tasting the notes printed on the bag. The roaster was likely brewing with completely different water than I was.

Eventually I built a sweet profile and an acidic profile from the same minerals in different percentages. For the longest time I went back and forth between jugs of each, until it felt too lopsided. So I blended them and worked my ppm down from there. It started high. Now it's a lot lower, and I'm getting notes out of coffees that I never knew they had.

Why is water the one thing we can't talk shop about?

Water seems boring and trivial, the kind of thing you can skip. It's the one part of brewing two people can't line up side by side.

You and I can talk about the exact same recipe. Similar kettles. A Hario V60 or an April brewer. The same filter paper. We can compare drawdown times and what's working and what isn't. If we bought the same coffee off the same roast, we can even talk about that.

Water is where that conversation breaks down. Even an expert helping you along doesn't know you, what you like, or why you like it. They can steer you in a decent direction, but what they're giving you is general advice.

Your palate is the one that decides

I learned this once already with roast level. Everybody I followed was talking about lightly roasted coffees and the gear that pulls more sweetness out of them. I didn't get it. Those coffees tasted too acidic to me. They didn't talk to me.

As I kept drinking darker, more developed coffees, they came alive. Even the acidic African coffees started tasting a little sweeter to me. I only got there because I trusted my palate. Water works the same way.

The chemistry can go as deep as you want: magnesium bicarbonate, potassium chloride, how many drops of what. What has to be true at the end is that the water works for you.

How will you know you're getting somewhere?

You'll start noticing that a certain water suits a certain roast degree, origin or process. Go back to tap and see what changes for you. Find a spring water you like, and then discover it isn't consistent: 80 ppm one time, 55 a couple of weeks later. Small swings like that start to show up in how you drink your coffee.

If you like good coffee, you're going to go through this eventually. You can only buy so many brewers. If you keep buying coffee and keep being unhappy with how it tastes, look at your water.

Once you've got water figured out, that's where the work gets fun, because whatever recipe or brewer you try next, for the most part your water won't be the thing standing in the way.