Amy, can you flush out your comments in more detail as I think it will be a good reference for others with the same idea as Harinath. 

Don’t rely too much on others to guide you ultimately, there will be many voices that tell you how difficult real estate can be, about tenants who flush steaks down the toilet (has happened to me) and evictions in NY.

My plan is to buy and hold.I have read on other posts about this problem and some are able to use things like hydrojet or root killer flush with copper sulfate to hold off needing any repairs.

I'm calling tomorrow for the last time because I'm lost, I've reached out twice for help and got no help, I'm $3,000.00 in and I would have learned more watching that money spin as I flushed it down the toilet.

Got an emergency call last week that one of the units toilet wouldn't flush and was backing up into the shower.

You can shut off the water yourself by turning off the main valve, but also drain the pipes by opening all faucets and flushing toilets to clear out any remaining water.

Quote from @Alonzo Moreland: A high water bill is typically due to a toilet that constantly runs/flushes.

Helical piers placed every 5' should fix this, but for a significant cost. 3) Due to a toilet becoming loose and failure to recognize that the toilet leaks every time it is flushed, the subfloor has "significant deterioration."

Flush it's brain. 

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.