For non-potable use, probably. Potable use might require some more treatment checks on it. It's one thing to use it for flushing the toilet... showering might be ok. Not sure about washing dishes. Washing clothes, maybe.

And for the "the amount of times I change out 2 gallons of water from the dehumidifier in the basement in the summer"... there's a lot of moisture out there.

This is constrained by season. In the winter, its much easier to get to 0% humidity than it is in the summer.

https://tropic.ssec.wisc.edu/real-time/mtpw2/product.php?col... for the total precipitable water over North America. Through the midwest, it's in the 40-50mm range.

Consider XKCD's giant raindrop - https://what-if.xkcd.com/12/

> We’ll imagine our storm measures 100 kilometers on each side and has a high TPW content of 6 centimeters. This means the water in our rainstorm would have a volume of: 100km x 100km x 6cm = 0.6km^3

> That water would weigh 600 million tons (which happens to be about the current weight of our species). Normally, a portion of this water would fall, scattered, as rain—at most, 6 centimeters of it.

Change that to 4cm for current conditions... but that's a lot of water.

https://en.wikipedia.org/wiki/Humidity#Relationship_between_...

That has a table of how much water at different humidity and temperature combinations. It's currently about 20 °C and that gives us 15.6 g/m^3.

... but there's an awful lot of air around.

This can also be complicated if you have trees or other vegetation around. The humidity at my parents place (fairly deep in the woods in farmland) is always much higher than it is if you go to the road (or in town).

https://extension.osu.edu/about/resources/corn-sweat-and-hum...

> Some research conducted by USDA Agricultural Research Service suggests that corn can contribute between 3,500 and 5,000 gallons of water per acre to the atmosphere over the course of one to two days. A typical pool contains 18,000 - 20,000 gallons.

...

So, it's complicated. Maybe, a little bit, depends on where you are.