French Drain Tech Corporation (FDT) serves construction industries, land developers, and homeowners by providing long-term site drainage solutions. FDT, a Dallas-based company, is the exclusive patent holder of FASP®, a subsurface, non-clogging, groundwater collection and drainage pipe. FDT provides pipe manufacturing and sales, publications, technical training, installation and commercial consulting. Expansive development in North America over the past 60 years has resulted in construction on sites that pose significant challenges to long-term building integrity. Unchecked groundwater undermines the stability of slopes, pavement and structures that make up the infrastructure of our communities. Water control is the key to sustaining the structures and outdoors areas that are essential to community life. FASP® subsurface drainage pipe is the culmination of over 50 years of experience, testing and resolution with problems caused by groundwater. A 100% success rate is behind the products, techniques and system designs recommended by FTD, as well as its founder, inventor and author, Wm. Ralph Johnson.