This is the 10372nd most frequent Swedish word.
kallvatten
Cold water.
Kallvatten is used to denote cold water in general.
Jag fyllde glaset med kallvatten.
I filled the glass with cold water.
Kallvatten is used in conjunction with a specific source, the faucet.
Kan du öppna kallvattenkranen?
Can you open the cold water faucet?
Kallvatten is used here to emphasize its temperature variation due to seasonal conditions.