The best way to answer your question is to ascertain what type of easement is at issue and for whose property the easement benefits and whose property the easement burdens by specifically reading the terms of the easement at issue. I suggest the language of the specific easement at issue be read carefully in that it might contain language as to whose responsibility it is for the repair of the collapsed pipe assuming it is mentioned as part of the easement.Typically a person who owns an easement over one's property has the obligation and duty to maintain it at his or her own expense and not at the expense of the owner of the property that is burdened by the easement.If the drainage pipe is not part of the easement at issue, then it would appear that the repair of the damaged pipe would lie upon the owner of the land where the pipe lies.Good question.