Third Wave Water Support logo
Third Wave Water Support logo

All articles

Water Questions

The most common questions about water types, water filters, and more.

What kind of water should I add Third Wave Water to?

Third Wave Water minerals should be added to any kind of "empty water." This includes distilled water, deionized water, reverse osmosis (RO) water, or water from a Zero Water filter. When you add minerals to any of these "empty waters" (water with li

Is Third Wave Water too hard for my coffee equipment?

No. All Third Wave Water mineral profiles create permanent hardness, which does not add to limescale formation to your coffee makers. However, it is recommended that you use only our profiles without chlorides in your espresso machine. Some equipment

Isn't distilled water bad for you and your equipment?

If you are wary of using distilled water or any other form of empty water because you have heard it is bad for you and your equipment, don't worry!. Once you add Third Wave Water minerals into distilled water, it is no longer distilled water, but a u

What is TDS and why does it matter?

TDS stands for "Total Dissolved Solids," and represents the amount of "stuff" that is dissolved in a liquid. This stuff can be organic matter, minerals, and even some chemicals (depending on where your water is coming from). TDS matters because it ef

Why is my TDS reading high?

The water you are using may not be truly "empty" water. For the most accurate results, test your water before and after adding TWW minerals. Starting water should read at 0-9 TDS. The TDS meter is calibrated to read potassium rather than sodium. Pota

Are there special instructions when using empty water like Distilled Water?

Yes. Since empty water (e.g. Distilled Water, Reverse Osmosis Water, Deionized Water, etc) does not have chemicals to reduce bacteria growth (like chlorine and chloramine) it must be handled differently. Over time, you may start to notice some bacter

Where can I find distilled water?

Empty water can sometimes be found in the United States at the following locations:. If distilled water is unavailable where you live, there are several different options that can be great substitutes!

What is "Biofilm" and how can I prevent it?

When dealing with unprotected water, or water that does not have any chemicals like chlorine or chloramine in it, a harmless bacteria called "biofilm" can grow. Some forms of unprotected water include distilled water, reverse osmosis water, and even

What should my TDS be?

TDS, or Total Dissolved Solids, is a measurement of the amount of "stuff" that has dissolved in your water. This is measured in Parts Per Million, or ppm. For each Third Wave Water Profile, this number can vary because different profiles have differe

Can I use reverse osmosis (RO) or deionized water with TWW minerals?

Both reverse osmosis (RO) and deionized water are suitable for making any of our profiles. They are equally effective as long as no minerals have been added back to them after the filtration process, ensuring a pure and consistent result for your cof

Is your water safe for my coffee equipment considering it contains calcium?

Yes. Our mineral profiles are completely safe for your equipment. Not all calcium is "bad" calcium. CaCO3, Calcium Carbonate, is bad calcium. It is formed from the reaction of calcium cations and carbonate ions that are commonly found in many natural

Is it safe to use tap water for my coffee?

Yes and no. While tap water is technically safe to consume and brew your coffee with, it ends up causing issues in your equipment and in your coffee's overall extraction and flavor. Tap water, spring water, bottled water, and filtered water, can all