Dry-to-wet ground movement can change how buried drain lines drain in Impact.
Ground that dries out and then takes on moisture again moves over time. That movement puts stress on buried drain piping at joints, transitions, and places where settlement has changed the line’s slope. A section that no longer falls properly holds onto waste and buildup instead of carrying it away.
Impact’s more spread-out properties can also mean longer buried runs between the house and the connection point. When a restriction sits outside the building drain, clearing the immediate blockage gets water moving again, but the line still needs to drain consistently to stay clear.
Not every backup points to a damaged buried line. Grease, soap residue, hair, and ordinary debris remain common reasons for a localized clog. But repeated main-line backups or several slow fixtures at once deserve a closer look at whether the restriction is inside the house drain or farther out in the buried piping. Inspection separates removable buildup from an offset, crack, root intrusion, or low-draining section that keeps collecting material.