If your crew knows what they are doing, they can use special anchors to pull the sagging sections flush and then this top layer will create a nice, smooth looking ceiling.

Required a rear flush toilet in order to tie into the sewer system in the adjacent apartment wall which saved me from having to bust into the slab. 

Proper maintenance includes, but is not limited to: changing heating & air filters on a regular basis; not flushing anything in toilets other than toilet paper (including "flushable" wipes); using proper plugs and extension cords in outlets; and other such events."

In reality when the unit has no water, the toilets don't flush, and you will have to deal with that on the turn.Sometimes, in such situations, the bath tub gets used as a latrine, leading to a very unpleasant situation when the unit must be turned.Good Luck!

As for the leach field, there are ways they can detect those, by doing a radio controlled device flushed down the toilet and following it to see where it goes, etc.

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

With a septic tank the only thing you should be flushing is crap and toilet paper - no flushable wipes (they don't go in sewers either, btw), no paper towels, feminine hygiene products, diapers, food from a garbage disposal, etc.

Flushed and cleaned out to the cleanout in the yard.

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

As a result, operators (syndicators) are flush with cash and are competing for acquisitions, which drives up prices.