Does water on Mars form from the atmosphere as ice free from salt? Does water desalinize through the evaporation and transpiration?
When the fresh top ice is placed in a container then pressurized to melt, would the water be carbonated?
Particulates of salt and dust is less in the atmosphere during a Martian winter so would the ice that forms be also drinkably cleaner?
https://space.stackexchange.com/questions/33884/how-to-drink-water-on-mars https://earthscience.stackexchange.com/questions/16076/how-salty-can-ice-be
https://kottke.org/18/12/a-massive-ice-filled-crater-on-mars