I own one of the units out of a total of eight in the building.There is a copper drain pipe leak inside the common wall between my unit and next door.Very old building from the 1960s, 1-1/2" copper trap arm from the kitchen - most likely previous owners or tenants used drain cleaning chemicals that ate into the copper, and the pipe has developed pin hole leaks at the bottom. 

Might watch out for a chemical issue, though.Honestly, just drain it, flush it with the supply a little, and don't worry about it.

(Not trying to be harsh or overly critical, I’m just attempting to help.)

I wouldn't leave chemicals and pesticides with my tenants that have kids.

This is going to sound harsh, but I will write it anyway. 

The 2008 crash only took 18 months.Over a single year, the stock market tanked $6.9 trillion of shareholder wealth.And investors felt those harsh ripple effects for more than four years.

The eviction law is so harsh on landlord here...I'll ask the lawyer again if I can serve by certified mail.  

"Won't" is too harsh but you're certainly "less likely".  

@Samuel Kelly I don't mean to sound harsh, but you're already WAY out of your depth. 

I don't mean to be harsh about the truck as I know the pain of making payments on mine (almost done!).