After arrival I began my plumbing evaluation and I started off in the master bathroom. Where the main issue is located. I first noticed that it was brand new shower trim that was put in. So my first instinct was to unscrew the shower head from the shower arm sticking out of the wall and there. I noticed a 1/2 inch pile of sediment that was caked on the screen of the shower head. After removing that, as well as cleaning out a few other aertors, the pressure issue disappeared. I then spoke with the homeowner, and do you wanted to move forward with the water heater flush but the tenants had to leave in order to go to work. So he's going to put off getting the water heater flushed for right now and he'll give us what's called back whenever they're available. Thank you.