Someone could also leave a garden hose running for a day.

.● Monitor the drainage on the north, south, and east sides of the house.

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.

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?

They are full size and yet still run off 120v and just need a water source and drain. 

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.

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

The code being cited by the inspector is below if you care to bother.Thank you.https://codes.iccsafe.org/content/IPC2021P3/chapter-7-sanitary-drainage#IPC2021P3_Ch07_Sec708 Could you put cleanouts within the interior (is there a basement?)

Are you in a market where water lines could freeze in the winter if there’s no heat?