In the accommodation given to me, I was told I can drink tap water.
Tap water is France’s most controlled aliment. You can check its parameters on an interactive map (which, in the French tradition, does not work at this moment when I tried to look up today’s values for Paris 😐)
EDIT: I found another (better) source specifically for Paris: https://qualite.eaudeparis.fr/. You can check where the water in your exact location comes from and the latest results (done several times per day or even per hour, but the results published on the site are a bit dated ("March 2023" for a check on 2023-05-21)
Bonus information (unrelated to the question): the site also has a list of water points in Paris at https://fontaine.eaudeparis.fr/
As already answered, this is hard water mineral deposits. Perfectly normal in many areas. While you encountered this first in your travels, in some areas you have soft water and hard water in the same city, depending on the local water sources.
The important thing is to not try to scrape it off. The solution (literally) is acid. I use white vinegar, but there are many other things you can use. Put a little vinegar in the pot, heat it up for a few minutes and your problem will be (dis)solved with no scrubbing.
I wouldn’t suggest you to drink tap water as a precaution.
A recent study has shown that it has a concentration of pesticide over 8 times the allowed regulated amount for a few years.
Though there is no immediate consequence, this particular kind of pesticide is proved to be cancerous.
So if I were you, I wouldn’t drink Paris tap water (I myself live near Paris), but there are no immediate consequences, it’s just a risk, it’s up to you if you’re willing to take the risk
Edit: Ok since some people want sources here you go, I didn’t want to include any because it’s in french OBVIOUSLY, so good luck :
https://www.anses.fr/fr/system/files/LABORATOIRE2022AST0255Ra.pdf
Don’t just start downvoting when you don’t know and you’re probably not even french, it is widely known and even been on the news a few weeks ago.
-> Ce rapport révèle en effet l’existence de métabolites de Chlorothalonil dans l’eau courante de nos robinets. Il s’agit de résidus d’un pesticide pourtant interdit depuis 2019.
TLDR; This report reveals the existance of particles of "Chlorothalonil" in our tap water. They are residues of a pesticide forbidden since 2019.
Paris water is very hard, which means that there is a lot of particles and mineral content in the water
What you see is a buildup of minerals and limescale, this is destined to happen when you boil hard water.
It is normal and not harmful in any way. Tap water is definitely very drinkable in Paris (I drink tap water myself as a local)
Credit:stackoverflow.com‘
4 Mar, 2024
5 Mar, 2024
5 Mar, 2024