Serving San Bernardino
Groundwater & Basement Water Intrusion in San Bernardino, 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
That wash is dry sand. Is it really a river?
It is a river with its water underground for most of the year, and the mapping treats it that way. The bed is loose sand, which means the channel shifts within it between events rather than staying put, and the flow it carries when the mountain front sheds one is enormous. Dry sand is where the water goes, not evidence that it does not come.
The wash ran hard and the rain gauge here barely registered.
The mountain front upstream is the answer, and it is steep enough to shed nearly everything that lands on it. A system sitting against that face puts a great deal of water into a channel within the hour, and it arrives here as a flow rather than as rain. What fell over the city has almost nothing to do with it.
Every house on the street seems to fail at the same time.
A street finished inside a couple of years to one specification wears out on one schedule. The heater, the supply hoses, the flashing and the pipe were all installed within months of each other, so they come due within months of each other too. A neighbor's failure is worth treating as a dated notice rather than as their bad luck.
This FAQ belongs to the San Bernardino page; it is repeated here.