Subsurface drainage systems that collect groundwater or surface runoff and redirect it to an appropriate discharge point.
Exterior water problems are best approached by identifying where the water comes from, how it moves across the property, where it collects, and what happens during heavy rain. Ask the provider how the proposed work addresses the water path and whether grading, drains, downspouts, sump equipment, or waterproofing need to be coordinated. Before contacting a provider, note the wet area, when water appears, soil and slope conditions, and where collected water may be discharged.