Sometimes they have to really treat the water for bacteria and such...like with chlorine...and then the by-product of the breakdown of the chlorine can be in excess of what is allowed and that is a known carcinogen. OT and OB probably know what that stuff is called...I can't remember off the top of my head.
So getting the letter in the mail saying they've failed the standard for that test is not something I like to get.
I'm sure the brown is just rust and the black is just old pipe sediment...but still...I don't wanna drink it! Heh heh!
Well the rust ought to be high in iron ;~D
I wouldn't want to drink it if it's got rust and dirt from the pipes!