Serving El Cajon
Groundwater & Basement Water Intrusion in El Cajon, CA
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
It barely rained here and the streets ran hard.
The hills around the valley are the explanation. They shed close to everything that falls on them and deliver it to the floor within minutes, so a modest reading at a valley gauge is entirely consistent with substantial flow arriving. What matters for a property is what fell on the slopes rather than on the roof, and that is worth watching during a storm rather than reasoning about afterward.
The first storm of the season is always the worst.
It usually is, for two compounding reasons. Roofs, scuppers, and drains go most of the year without a real test, so a defect that developed in summer is found by that first system. And the ground has a crusted surface after a long dry spell that sheds water rather than absorbing it. A larger storm in February often does less damage than a modest one in November.
Should we be worried about a burned hillside above the valley?
Yes, and for several seasons rather than one. Burned ground sheds far more water and carries debris with it, so flows that were routine become damaging and the debris blocks the outlets a closed valley depends on. Since this valley has a limited number of routes out, a blockage has a wider effect here than it would in open country. It is worth knowing what has burned upslope.
The El Cajon overview carries this FAQ with the city research.