Is there a code ref prohibiting a french drain from being tied into the homes drain lines? I am sure there has to be but would like to read it for hte exact wording?
The home inspected last night had a slow drain from the upstairs bathrooms. There were 3 tubs upstairs and I filled them all to capacity to check the overflow drain connections. Well, come to find out the home main drain line was clogged in some way. Next thing I find outside is the french drain from the backyard pool patio area is draining water out to the front yard street. There is no rain and the pool area is completely dry. Am I accurate in assuming the h/o had tied the french drain into the homes drain lines in some way?