Serving South Portland
Groundwater & Basement Water Intrusion in South Portland, ME
Basement seepage, failed sumps, and hydrostatic pressure against the foundation are extracted and dried, and the path from the ground is identified so the loss does not repeat. Groundwater and basement seepage are extracted and dried only after the path from the soil is identified — a wall, a slab, a drain, or a failed sump. Drying the interior without stopping that path returns the same water to the same floor.
Frequently asked questions
The cellar wall has moved over the years.
In this climate that is usually frost rather than settlement. Water in the soil behind a wall freezes and expands, pushing against it, and the cycle repeats every winter. Over many seasons the wall bows or courses displace. Keeping the soil behind it drier is the only real lever, since the freezing cannot be prevented. Rebuilding without addressing the water means the same movement starts again.
Why does a storm tide matter if we are not on the water?
Because the drainage serving the low ground discharges to the harbor, and at high water there is no head to push against. The system backs up rather than carrying rainfall away, so streets and cellars several blocks inland can take water while the shoreline itself holds. Watching the tide alongside the forecast is useful well beyond the properties that can see the sea.
What can be done where ledge is right under the cellar?
Work with it rather than against it. There is very little soil to absorb water, so the backfill around the wall fills instead. A footing drain that actually discharges somewhere lower is what changes the outcome, and on a sloping lot a gravity line to daylight is ideal because it has no pump to fail. Where there is nowhere lower, an interior drain to a sump is the practical fallback.
Open the South Portland FAQ beside the housing and climate notes.