The Importance of Water to Make a Good Espresso

When it comes to brewing coffee, many factors contribute to the final flavor and quality of the cup. While coffee beans, grind size, and brewing methods often take the spotlight, one crucial yet often overlooked element is water.

The importance of water in coffee cannot be understated, particularly when it comes to brewing a perfect espresso. In this article, we will explore why water quality is essential, how to use high-quality water, and the impact of water temperature on your coffee.

True Neapolitan espresso flavour:

Discover Nurri 

Why is water quality essential when brewing coffee?

Water accounts for around 98% of a cup of coffee, making it the primary ingredient. Its quality has a direct impact on the taste and aroma of the final brew. If the water used in brewing contains impurities or unwanted minerals, it can negatively affect the flavor profile, leaving you with a mediocre or even unpleasant coffee experience.

The purity of the water plays a significant role in extracting the desired flavors from the coffee beans.

Does water affect the taste of coffee?

Yes, water greatly affects the taste of coffee. Different minerals and impurities present in water can interfere with the extraction process and alter the flavor of the coffee. Chlorine, for example, is often found in tap water and can impart a harsh taste.

Hard water with high mineral content can lead to over-extraction, resulting in a bitter and astringent coffee. On the other hand, water with low mineral content can lead to under-extraction, resulting in a weak and lackluster brew. Thus, using the right water is crucial to achieving a well-balanced and flavorful cup of coffee.

How does water temperature affect your coffee?

Water temperature plays a significant role in the extraction process. When brewing coffee, the water should be heated to the optimal temperature range, typically between 90°C and 96°C (195°F to 205°F). If the water is too hot, it can over-extract the coffee, resulting in a bitter taste. 

Conversely, if the water is too cool, it will under-extract the coffee, leading to a weak and insipid brew. Consistently maintaining the right water temperature is essential to achieve a well-rounded and flavorful espresso shot.

The importance of water for espresso machines

Espresso machines are highly sensitive to water quality. The intricate internal components and delicate mechanisms can be easily damaged by minerals and deposits present in the water.

These impurities can build up over time and affect the machine's performance, leading to clogs, reduced efficiency, and even expensive repairs. Regular maintenance and descaling can help, but the best approach is to use high-quality, filtered water from the start.

By using filtered water, you can ensure the longevity and optimal functioning of your espresso machine, as well as consistently produce excellent espresso shots.

For perfect maintenance in general, we recommend that you read our guide “how to drain water from a lever espresso machine”.

Why filtered water is the best water for making coffee

Filtered water is often regarded as the best option for brewing coffee, including espresso. By using a water filtration system, you can remove unwanted impurities and minerals that can negatively impact the taste and quality of your brew.

Filtration systems can effectively remove chlorine, sediment, and other contaminants, providing cleaner and purer water for brewing. Additionally, filtered water helps maintain the longevity and performance of your coffee equipment by preventing mineral deposits and scale build-up. Investing in a good filtration system is a worthwhile step towards achieving the best possible coffee experience.

In conclusion, water quality plays a vital role in brewing a good espresso. The taste, aroma, and overall quality of your coffee are influenced by the water used. Choosing high-quality, filtered water and ensuring the correct water temperature are essential steps in brewing a flavorful and satisfying espresso shot.

By giving due consideration to the water you use, you can elevate your coffee experience and savor the true potential of your favorite beans.

Do you want to know more about espresso machines?

Contact us