Primarily desert washes, but also near a creek....So I would go knock on doors and ask neighbors when it has flooded and what they think about the area......maybe call the County water board and ask then what has happened there in the past.

In the desert it costs me LESS than $20 for water.

I would also look at the availability of public water and public sewer, if not at the site how far away are those services.

The issue with watering your foundation is that you have to do it always, every year without a break in order to achieve the desired effect.

We have had many water leaks that have damaged the flooring.

Should I provide my guests with bottled water or a Brita water filter or leave it up to the guests to bring their own water?

Note that water penetration is not limited to flooding from rising water levels on the ground in a weather event.

Water from the well has sediments and water forms a yellow lining in toilet.

Usually if it is something no HoA I solve the issues but now the prolem is under the HoA mercy that seems to careless and the water damages are severe and scary on the photos.

I am a bit concerned about water long term in AZ and NV.