water out the exhaust

Does anyone know why I would have puddles of water coming out of my exhaust? When I run once and a while it'll look like I'm rolling coal down the road when it's really cold out. When I sit, I see a puddle under the exhaust past the Y-pipe. It's water, not antifreeze,oil or fuel. I've had the bellow flex pipe replaced right past the elbow from the turbo and it was dry, no issues( had a hole in it so I replaced it).
I did throw a code for the scr a while ago, but the mechanic said don't worry about it until it becomes a problem, i.e. throwing codes a lot, since it's $3,500 to replace plus with a new harness. When I see it smoke there is no rhyme or reason. Get on the throttle, off the throttle. puffs like a locomotive, or not at all. It really showed up with the cold weather and the smoke out the stacks..
thanks
2013 389 isx600

 

In 30 minutes I trapped this much fluid in the bottle. This was only one of three places it was leaking. This amount is normal?? I'm parked along with 50 other trucks. I'm the only one smoking this much. I leave puddles on the ground. I find a ice berg stuck to the front of my fuel tank after driving an hour. I can't see THIS much fluid as being normal. Thanks fro the replies, but I don't believe it's normal.
This would happen after running for about 5 hours, then shut down for a couple of hours. At start up it won't smoke, but in a couple of minutes the water will start weeping through joints in the exhaust past the Y-pipe. As it warmed up, the smoke would start.

 

I fill up on Def every 10 days with about 15 gallons. Is that about normal for everyone else, or am I using more than usual??
Hard to say about the freezing, the puddles do get slushy, frozen, but I don't remember what the temps when this occurs.The fluid against the tank would freeze due to the considerable wind chill against the metal tank.

 

I know that some fluid out the exhaust is normal. Let's assume that this IS past the acceptable level. It is past the acceptable level. Thank you spsauerland, that's what I need to know. I figured I'm using 3.3% def to fuel.
So what else would be causing this? an issue with the SCR?