Then based on @Michael Baum's suggestion, I think I will have my cleaner and/or maintenance person do monthly/quarterly maintenance like using using enzyme based cleaners, grease fighting drain treatments and hot water flushing. 

One misstep and you could be in hot water. 

It had 22 of the 25 lots occupied but we'll be fixing it up, filling it up, billing back water and raising rent up to market.

If there are pets in the unit take a pan from under the sink and fill it with water so there's something to drink.

Just starting out and testing waters for BRRR in Chicagoland area.Any advice or suggestions regarding this?

I don't recommend throwing the baby out with the bath water, and definitely make sure you understand the nature of the Mentor you choose.BP is a great resource to meet some amazing people. 

Tenant pays all utils except water.  

can I find absentee owners and water cut off lists etc.. on PropStream?

Each of the 5 warehouses on this campus will require updates (construction of offices/bathrooms, roof repairs, paint, siding repairs, new penetrations for doors, updates to electrical, insulation, and extension of water and sewer). 

A buddy of mine just built a duplex on the water in Placencia