Is Water Affecting Your Brew? A Guide to Best Water for Coffee

Is Water Affecting Your Brew?

Does water affect your coffee brew? Yes, water has a lot of effects on your coffee brew and taste. Clean water does not necessarily guarantee great taste in your coffee. Water contains some dissolved minerals and solids that affects the quality of your coffee. The best water is one that improves the flavor and makes coffee smoother.

Some dissolved solids are evident in your water. The white deposit in a dishwasher on pans is a sign that water has some dissolved elements.

How to Test Your Water

Dissolved solids are necessary for treating water. At low levels, they are very beneficial. At high levels, they are unhealthy. Measuring Total Dissolved Solids (TDS) is tricky. You can buy the TDS measurement devices from amazon.

Zero dissolved solids in your water give the best coffee flavors. The reading may vary depending on your water source. The higher you get from zero, the less tasty your coffee will be.

The ppm (parts per million) ranges from zero to five-hundred. The acceptable range for brewing coffee is between 75 and 250 ppm. Above 300, it is dangerous and less tasty. Readings above 350 is not be used in making coffee.

How to TDS affects Your Coffee

TDS come in between clean water and extracting beans. Water is added to the fine ground coffee, runs through it, and dissolves coffee. TDS build up and create sediments in the process. The sediment covers part of your grounds, thus ruining the whole process. Some grounds will not be utilized.

Filtered Vs. Spring Water for Coffee

Springwater naturally contains magnesium, calcium, sodium, and potassium, while filtered water does not have these compounds. For the tastiest coffee, it is advisable to use filtered water. Most coffee houses use filter systems for water used in coffee brewing.

The lower the TDS, the tastier will be your coffee.

Filtered Water shows the Flaws in Coffee

Filtered water brings out about 99% of taste and flavor in the grounds. The grind surface area is well covered; thus, extraction is very efficient. High-quality beans result in better taste.

Alkaline water also produces healthier coffee since it neutralizes acidity in coffee.

Alkaline Water and Coffee

Alkaline water balances the acidity during brewing. The shortcoming of using alkaline water is that it inhibits antioxidants which have health benefits to your body.

Coffee Brewing Does Not Kill Waterborne Bacteria

The ideal temperatures for coffee brewing are 200 Fahrenheit (93 Degrees Celsius). The temperature is below water boiling point where most bacteria are destroyed. Brewing may not, therefore, kill all microorganisms in water.

It is recommendable to use alternative water filtration methods which remove bacteria. If you are cold brewing, ensure you use water from a clean source or has been filtered.


Water quality is paramount in coffee brewing.

Always filter water even if it is from a faucet. Use the five-step filtration by ZeroWater since the two-step process does not remove all TDS.



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The lesser the TDS, the better the taste and flavor of your coffee.

Filter your tap water to remove TDs before brewing your coffee. If you want to learn more about water and filteration, go to our sister site the water filter market.