It´s wonderful see that you have updated, very good chapter, but you are very cruel finishing  the chapter in this point, please update soon.

Poor Harry is very hard Know you are the  responsable of the hurt of other person.

Oh, poor Harry! Poor, poor Harry! Poor Draco too. They really did it, bickered so much and finally someone got hurt. I guess we all saw it coming though. This was a really good chapter, I loved seeing how the boys did NOT get along, and all of Harry's thoughts. He's really insecure, isn't he? I hope that Snape isn't too mad at him, he must feel horrible.

I didn't notice any joint words but I did notice this: 

Stoppering up the tub drain, Harry turned the water off. (You mean on?)

while Harry had to toil in the dirty like a dog. (Is this an expression or did you mean garden?)

Great chapter!! I loved your description of Harry's thought process when he is interacting with Snape and Draco. You are cruel to end the chapter the way that you did, so you need to update soon.