Places here in our own solar system like Mars, Europe, Moon, Enceladus and even Mercury have water (or traces thereof) in liquid or solid state. Whether you're ready to fill a glass or not, would you drink Martian water? While eating an extraterrestrial liquid is an interesting symbolic feat, we recommend you think twice before putting a single drop in your mouth.
On Earth there are rivers, seas, lakes and streams with fresh or salt water. Many of us are accustomed to drinking glass of water from various treatment processes until it comes out of the tap, which is usually extracted from groundwater. The water distributor is responsible for regulating the pH and ensuring that there is no contamination by pathogens. But from what we know there is only life on Earth, so what's the problem with drinking water from another planet?
Knowing what minerals are in the water of other planets and in what concentrations are very difficult to assess at the moment. There is a good chance that any water you try to bottle and drink from another world is a mineral mud, acidic or charged with toxic metals.
If we take it from Mars, for example, it is likely that any water found there is extremely acidic or even very salty. You may argue that some soft drinks are also acidic and you would be right. However, with a pH of up to about 2.4, our stomachs can cope quietly, the acidity of the Red Planet, however, will cause serious internal injuries.
So, no, do not take Martian water, let alone lunar. Let's hope that in the future of space exploration there will be a treatment for taking Martian juices or coffees. [SpaceAnswers]