Yes, you exhaust the depreciation quicker, but the strategy is to 1031 these smaller properties into larger ones and then do it again and again.  

I've spoke with a few people and there's really no alternative other than a sump pump to push the water up the pipes to our main drain line since the bathroom is below grade in the basement. 

I'm a little unsure of your piping configuration for each structure to be able to better advise on a solution.You can purchase a water meter from a local plumbing supply house and install it on the line feeding that building (not that difficult to do, either), and charge them whatever your local water rates are (or more if need be).Regards,Charlie

Also, put vent caps (the wire mess type that still let air through) on your laundry exhaust vent at the exterior of the home if it is low down to the ground (but make sure you don't completely block the air flow or clog the line). 

US National will also write polices on tax sale properties that have gone through the quiet title suit, but there is likely going to be curative work that will need to be done as they will do an exhausted search and notify anyone who may have an ownership interest in the property.

And repeat until you exhausted your list.

He changed the toilet out and some minor piping.

Increased pressure can put strain on fixtures and will increase the risk of pipe bursts and leaks.

Having 5-10+ different policies, possibly multiple carriers, different policy numbers, different levels of coverage, different deductibles, different rates, can get exhausting and become really hard to keep track of to say the least. 

IE: If you show up tomorrow and all the piping is gone, they can come to me to start the police investigation.