Well There’s Your Problem

The plumbing issues we were having were found out to be due to a crushed pipe when they installed the new water treatment septic thingy. 

Nasty!!  At least it is fixed, and it has also alerted us to another issue—our ice maker in the kitchen was never plumbed correctly, so we are going to be fixing that and should have no more plumbing issues again!  Hurray  :)