The Secret to the Best Coffee
As a coffee enthusiast, I’ve always been particular about every aspect of my coffee-making process. From the beans’ origin to the grind size, every detail matters. But there’s one factor that often gets overlooked: the water. Recently, I decided to conduct an experiment comparing coffee made with purified water to coffee made with raw tap water. The results were eye-opening.
The Experiment Setup

To ensure a fair comparison, I used the same beans, grind size, and brewing method for both batches. My beans of choice were freshly roasted Ethiopian Yirgacheffe, known for its bright, citrusy notes. I brewed both batches using a French press, which is my preferred method for its ability to highlight the coffee’s nuanced flavors.
The Raw Tap Water Experience
I started with the raw tap water. As I poured the hot water over the grounds, the familiar aroma filled the air, promising a rich cup of coffee. However, upon tasting it, I immediately noticed a difference. The coffee had a slightly metallic aftertaste and lacked the clarity I’ve come to expect from my favorite beans. The bright citrus notes were muted, and the overall flavor profile seemed duller, and there was THIS floating on top!

The Purified Water Revelation
Next, I brewed a pot using purified water from my whole home water purifier. As the coffee brewed, the aroma was noticeably more pronounced. When I took my first sip, the difference was striking. The metallic aftertaste was gone, replaced by a clean, crisp flavor. The bright citrus notes of the Ethiopian Yirgacheffe shone through beautifully, and the overall experience was much more enjoyable. The coffee had a purity and vibrancy that was missing in the tap water brew.
Why Water Quality Matters
The differences I experienced boil down to the impurities and minerals present in tap water. Chlorine, which is commonly used to disinfect tap water, can impart an unpleasant taste to coffee. Additionally, minerals like calcium and magnesium, while beneficial for health, can affect the extraction process, leading to a less balanced cup.
Purified water, on the other hand, has most of these impurities removed. This means the water is a neutral medium, allowing the true flavors of the coffee to emerge. For a coffee purist, this can make a significant difference in the overall taste and enjoyment of the beverage.
Conclusion
This experiment reaffirmed my belief that every detail in the coffee-making process is crucial, including the water. For anyone serious about their coffee, I highly recommend using purified water. The investment in a good water purifier can dramatically enhance your coffee experience, bringing out the best in your beans and making every cup a true delight.
If you’re as passionate about coffee as I am, consider testing your water quality. Schedule a free water test with us today and discover how you can elevate your coffee brewing to the next level.
