water testing

I am running all drain the lines from a new first floor addition over and through the existing foundation wall, and to the stack in the unfinished basement; sink, shower, and toilet. I am running the vent lines through my cape cod's front knee wall, above the stairs, and tying it into the...

I'm a homeowner building my own small house along with contracting out parts of the work. I'm a worrier by nature, and being involved in building a house may not have been the best idea but I'm more than halfway there. I'd greatly appreciate some knowledgeable advice about a plumbing concern...