I estimate high of what the bill would be and put it on their lease, I have not had any issues this way and if the water bill goes up, I will increase on the next lease. 

You might need a 2nd well if you're not on city water. 

The rental might be vacant for a month,(8% loss) or a tenant might not pay for a month while you pay to evict them.(8-16% loss)  A $1,000 appliance/water heater, or a $8k rook or hvac unit might go out.(5-40% loss)  You should be paying a PM 8%.

Over a weekend during which my tenant was not home, the condo became flooded and water went through the flooring and flooded the office below.  

If the security deposit is not going to cover the the water bill or damages, try to scare him into covering the balance by hinting at sending him to collections and it will appear on any future credit pulls he may have done.

I'm skeptical but I'm willing to test the water to something small first.

Also, Investors need to be prepared for and understand if there are additional costs that come with foreclosures, such as water bills, and potential fines for property upkeep.

.- increase in vacancy to 30%, 40%, 50% (this could be a combination of bad luck: one unit water damaged, one unit tenant trashed, and you have to evict two more - on a 10 unit portfolio that would be tough, even though only temporary)- lower rents (for whatever reason, what happens if rents go down 10% or 20%?)

He would show up, realize he didn't like the view of the water tower half a block away and back out.- Getting under contract and then reducing the price because of findings is common, but major reductions are likely to tick off the seller unless you have strong justification.

@Bijan SabbaghiYou don’t that’s the challenge - we pull data from several places as a note holder and for example and currently we see less than 20% actually going to foreclosure as most are ending in bankruptcy right now due to borrowers equityThe ones that are under water are typically going back to the bank.Best bet is to find properties where deceased or maybe divorced to get higher chance of actually going to foreclosure