No, the sewer gases could come out and fill the attic and the rest of the house.
I would say ok on the supply but not hte return.
No it is not ok as there are toxins in sewerage and some are quite harmful.=Why it happens is usually poor sewer /drainage piping is unmaintained properly=
No.
Select the System Settings icon on the HOME Menu, and tap "Open."Select Parental Controls from the System Settings menu, and tap "Yes."Create a four-digit PIN, and tap "OK."Enter the PIN a second time and tap "OK."Select a secret question, and tap "OK."Enter the answer and tap "OK."Tap "Set Restrictions."When restrictions are complete, tap "Done" to save the settings.Source: nintendo.com
yep
ok
Yes it is okay for you to drink tap water
Sure, as long as you don't do it hard. :)
yes
Normally NO but Illinois has the best politicians money can buy thus anything is ok as long as no one gets caught
No it's not