Dallas Drain Company, in business since 1984, has built a successful business model and niche that combines old-school artisanal craftsmanship and investments in technological research. Dallas Drain Company specializes in installation of drainage systems using it's patented French Angled Slotted Pipe (FASP). The pipe's self-cleaning design does away with the need for filter cloths that can clog up with dirt, which necessitates digging up the systems for replacement. Dallas Drain's FASP systems demonstrate a successful outcome for the life of the structure. The company takes in-house research and development seriously; it's won patents or has patents pending for products that clean downspouts and monitor basement sumps. Dallas Drain is one of the few drainage-only companies in the U.S.