Perhaps the hardest place is in a home with wives and kids. The use dehumidifiers to remove moisture from the air. My son's old apartment had on in the basement that had to have the drip pan removed and drained twice a day. The pan held about 2 gallons.
If you look on infowars.com they sell one that has had a filter installed and produces more water than that.
In Thailand, where it rains like hell for 6 months then none for 6 months, they hang out plastic sheets to collect moisture and shed it toward another plastic sheet to sluice it to a jar.

Sourcing water will quickly become a bigger problem than how to keep it up to standards an tasting good.