Does the Water Really Matter When Making Coffee

When I went on vacation this summer, I brought my favourite Virgin Hill Coffee with me. Yes, I love our coffee that much, I bring it with me on vacation. I was expecting to enjoy my usual cup of filter coffee every morning but something was off. The coffee didn't taste the same at all, even though I was using the same beans I drink at home. After the first morning with everything else remaining the same, I started using bottled water to make our drip coffee, and it made a noticeable difference.

It was a good reminder that the coffee itself is only part of what makes a great cup. Water plays a much bigger role than many people realize, and if you've ever wondered why your coffee tastes different from one place to another, your water could be the reason.

Coffee and water are the only ingredients in a regular cup of black coffee, so it makes sense that the quality of both matters. You can start with freshly roasted beans and get your brewing method just right, but if your water doesn't taste good or has the wrong mineral balance, your coffee may not taste the way you expected.

Does Water Quality Affect the Taste of Coffee?

Yes, water quality can have a noticeable effect on the taste of your coffee because water extracts the flavour compounds from the ground beans during brewing. Its mineral content, taste and odour can all influence the final cup, even when you're using the same coffee and brewing method. 

Water contains naturally occurring minerals, including calcium and magnesium, which play a role in extraction. The right mineral balance helps bring out the coffee's flavour, while water with an unsuitable balance can leave the coffee tasting flat or unbalanced.

The taste of the water itself matters, too. If your tap water has a strong chlorine taste or smell, you may notice it in your coffee. Since water makes up most of your finished drink, any unwanted flavours can become quite noticeable. This is why the same coffee can taste different when you're travelling or visiting someone in another part of the country. The beans haven't changed, but the water you're using might have.

What Is the Best Water for Making Coffee?

The best water for coffee is clean-tasting water with a suitable balance of minerals, without strong unwanted tastes or odours. For many people, tap water works perfectly well, but it depends on the quality of the water where you live.

If your tap water tastes good on its own, it's a reasonable place to start. However, if you notice a chlorine taste, an unusual smell or excessive mineral buildup in your kettle or coffee maker, your water could be affecting your coffee. 

Filtered water is worth trying if you're unhappy with the taste of your tap water. Depending on the filtration method, a filter can reduce chlorine and other substances that affect flavour, helping you get a cleaner-tasting cup.

Bottled water can also be an option, as I discovered on vacation, but not all bottled water is the same. Some varieties have a very low mineral content, while others contain more minerals than you'd ideally want for brewing coffee. Rather than assuming bottled water is always better, look for water that tastes clean and has a suitable mineral balance.

Why Water Filtration Matters at L'Atelier de Café Virgin Hill

At L'Atelier de Café Virgin Hill, we pay close attention to the water we use to prepare our coffee. We have a comprehensive water filtration system because water quality is an important part of making a consistently good cup.

We put a lot of care into selecting and roasting our coffees, and we want the flavours of each coffee to come through as they should. Water that's properly suited to brewing helps us get the most out of the beans, whether we're preparing espresso or drip coffee. 

It's easy to focus on the coffee equipment, the grinder or the beans themselves, but water deserves just as much attention. Even small differences in water composition can affect extraction, which is why water quality is something we take seriously at the Atelier.

How Can You Improve the Water You Use for Coffee at Home?

You don't need a professional filtration system to improve your coffee at home. If your tap water tastes good and doesn't cause excessive mineral buildup, you may already have what you need.

If your coffee doesn't taste quite right, try a few simple changes before switching to a different coffee or buying new equipment.

Try filtered water. If your tap water has a noticeable chlorine taste or smell, brew your coffee with filtered water and compare the results. You may be surprised by how much the flavour changes. We use a Brita water filter, for us it works great. 

Pay attention to mineral content. Minerals help with coffee extraction, so removing all of them isn't necessarily the goal. Water that's very hard can also cause mineral buildup in your coffee maker, which is another reason to pay attention to the water you use.

Keep your coffee equipment clean. Mineral deposits can accumulate inside kettles and coffee makers, particularly in areas with hard water. Follow the manufacturer's cleaning and descaling instructions to help keep your equipment working properly.

Use water that tastes good on its own. This is a simple place to start. If you don't enjoy the taste or smell of your water before brewing, there's a good chance it won't do your coffee any favours either.

Frequently Asked Questions About Water Quality and Coffee

Sometimes, It's the Water

My experience on vacation reminded me that even when you're using your favourite coffee, the results can change depending on the water you use. Switching to bottled water made enough of a difference that it became part of our morning routine for the rest of the trip.

If your coffee at home doesn't taste quite the way you expect, take a closer look at your water before assuming there's something wrong with your beans. You might find that a simple change is all it takes to get more out of the coffee you already love.

After all, when coffee and water are the only ingredients in your cup, both deserve a little attention.