It all depends on the material type. It may be clay, PVC or thin wall plastic corrugated tubing. Roots get into pipes and then widen the opening as they grow. We can't use a drain snake inside thin wall corrugated pipe but we can on the other types of pipe. Drain tile pipe is perforated pipe with openings every couple of inches and on all sides. That means hundreds of openings capture rain and ground water and divert it to your sump pump where it can be pumped out to the storm sewer. If the roots inside the pipes are very fine, we may be able to jet them out with a high-pressure water jet system. The best thing to do is to run a camera down the line to examine the damage and determine the type of pipe you have. Roto-Rooter can provide all of these services.