Serving Charleston
Groundwater & Basement Water Intrusion in Charleston, SC
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
Yesterday's rain flooded the street. Today's similar rain did not. What changed?
The tide. Charleston stormwater leaves through outfalls into tidal creeks, and a king tide erases the gradient those pipes need. An inch at low water drains; the same inch on a high tide holds in the lane and then covers a pad or fills a crawl. Check the tide table against the hour the water arrived. A contractor will treat tide-backed street water as contaminated, not as clean roof runoff.
There was no rain and the street still filled. Is that a plumbing failure?
Usually not. Sunny-day flooding is the tide moving backward through the storm system and surfacing in low lanes. The house did not spring a leak; the drainage network was already full. For a raised peninsula cottage that can mean salt-influenced water in the crawl without a cloud in the sky. Extract and dry the bay, and do not assume a supply line until the tide cycle is ruled out.
Should we prefer a raised cottage to a newer slab on the marsh edge?
Raised floors keep rooms above a king-tide sheet; they do not keep the crawl empty. Newer slabs stay dry in a modest tide and then take the whole event across the finish when rain and tide coincide. The better question is how water will enter the assembly you already own. A local pro maps the crawl or the slab after a tide event instead of arguing which foundation is safer in the abstract.
The Charleston overview carries this FAQ with the city research.