The Importance Of Water When Brewing Coffee

Keurig Coffee Maker Manual

Over 90% of coffee is made up of water, whether its espresso or filter coffee. It is the solvent during coffee preparation and influences how your coffee tastes by determining how coffee can be extracted depending on the quantity added into a cup.

For both espresso and filter coffee, all soluble substances in the coffee beans should dissolve in water and release their real organoleptic properties. This is why you must use the right water to get the best possible cup of coffee.

Can Water Quality Affect Coffee?

Yes. The hardness levels of water can influence how your coffee tastes. However, not all minerals can make your coffee taste bad or affect extraction though they should be in small doses.

This can make filtering quite difficult; it is only essential if you want to keep your coffee taste consistent. Water hardness changes depending on whether it has rained or not, so you are likely to find that your coffee tastes differently almost daily.

If your water tastes good to you, it is likely to make good coffee for you. Here are some of the qualities you should check before using the water for coffee brewing:

  • The water should not have flavors, odors, or any other unnatural color.
  • The water should not be basic or acidic. It should be neutral
  •  It should have some dissolved minerals, not exceeding four grains of hardness, which is around 10mg/L of sodium and alkaline content of 40 mg/L.

Most people do not own a testing kit to ensure their water’s mineral levels are within these parameters. However, you can get the information in the nearest water treatment facility to know local water mineral standards. Besides, you can buy test strips and test your home water. Common minerals found in water include:

Carbonates: If your water contains plenty of calcium, it affects your coffee making equipment. However, a slight touch of these minerals helps to reduce acidity in water.

Calcium: IT is the most common mineral in water and causes limescale problems. However, a little calcium helps with coffee extraction, so it should not be removed completely.

Magnesium: Some magnesium in your water is not bad; it also helps with coffee extraction. But, it is rarely found in water.

Chlorides: Chlorides are either sodium or potassium. Sodium chloride reduces extraction efficiency when making coffee, and therefore, the presence of this salt is not great. You should filter sodium chloride completely from your coffee for a perfect taste.

Copper and Iron: These two minerals find their way into the water old water supply pipes. This makes your water taste metallic and should be filtered before you make coffee or drink the water.

PH: This refers to the alkalinity or acidity of the water. It is affected by minerals present in the water. The scale reads between 1 and 24; 7 means your water is neutral, but anything between 6.5 and 7.5 is good enough to make coffee.

How To Get The Best Water Composition

Hard water is not the best for coffee making. It not only affects the taste of your coffee, but it is also bad for coffee making machines. Some minerals will alter your coffee altogether, and others are fine as long as they are small doses. So, how do you know that your water has the right composition of minerals?

The answer is to use filters and be sure to get the right one. Some will remove the bad minerals and leave traces of magnesium and calcium. They include activated carbon or charcoal options, which clean the water. Unless you live in an area with extremely hard water, always test the water to hardness level. Filtering is better than getting bottled water as you are sure of the mineral amount in your water. Here some of the most efficient ways to get the best water composition for coffee brewing:

  •     Use filters made for coffee machines as they only remove the stuff not needed in your coffee. Check the specifications before buying to ensure that it works best for you.
  •     If you do not want to risk using any filters with your machine, get a water jug with filters. It perfects your water without risking your coffee machine.
  •     Hard water is not only bad for your coffee; it affects other activities in your house, such as showering, laundry, and washing dishes. You can use a water softener and filter all the water at the pouring point. This is a cheap option and comes with many benefits along with tasty coffee.

Descale your kitchen equipment regularly, including coffee makers and water kettles. They can contain traces of different minerals, which can influence the taste of your coffee. It is easy to find a descaler, and most brands have them available.

Apart from using filtered water, you can also go for distilled or purified water. Distilled water refers to water obtained after boiling contaminated water until it changes into steam. Most minerals have a higher boiling point than water, and they are therefore left behind as water turns into steam. So the vapor condenses into water and gives you perfect water to brew your coffee.

To remove all contaminants 100%, the distilled water can be taken through a purification process. They include filtration, disinfection, and sedimentation. Besides, there is coagulation and flocculation, which means adding chemicals that are positively charged into the water. They bind up the negatively charged toxins and form contaminated particles, which are known as floc.


The importance of water when brewing coffee cannot be overlooked. It is, therefore, worth ensuring the quality of water for excellent results. It is an open secret that water has the most significant impact on your coffee.

If you love coffee and really want to enjoy the best every day, you have to take time and ensure your water has the right compositions. Take the necessary steps to customize your coffee if you live in an area with very hard water. You can buy all your coffee equipment from Qavashop UAE for assured quality, but it’s not enough if you do not use quality water to brew your cup of coffee.


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