The bottom 3 courses of my cinder block are wet and deteriorating (effervescence). The basement is waterproofed and it’s still happening. Its on 2 interior walls and 1 exterior. The top layers of interior walls are dry. The top layers of exterior are also wet. I live in Detroit Michigan and there’s been a lot of rain but this was going on before I had it water proofed as well. The contractor said I do not need a sump pump. I’m not near water. Can anyone help???