The average human consumes approximately eighty litres of water per day. There is evidence of an abundance of water ice on Mars, where radiation exposure is a risk. Hydrogen (or water) is an effective shield against GCR and SPE radiation.
Mars Hydrosphere is a human settlement located within the water reservoir that would be necessary to sustain a population of 10,000 people. Water is a good thermal insulator, while its transparency will act as a liquid sky, allowing access to natural sunlight. This would not only help maintain circadian rhythms and mental wellbeing, but also increase functionality and productivity.
Mars Hydrosphere
Clouds Architecture Office