Sump Pump Installation

Sump Pump Installation & Repair in Pasadena and the San Gabriel Valley

When a Pacific storm system parks over Southern California, the runoff has to go somewhere, and in older San Gabriel Valley neighborhoods a lot of it ends up under the house. Homes in Pasadena, Altadena, and La Canada Flintridge were often built with crawlspaces or dug-out basements on hillside lots, and once groundwater rises during the winter wet season, a sump pump is the only thing standing between your foundation and standing water. When that pump quits, you usually find out at the worst possible moment, at 2 a.m. during the heaviest rain of the year.

A sump pump lives in a pit, or basin, at the lowest point of your crawlspace or basement. As water collects, a float switch rises and triggers the pump, which pushes the water out through a discharge line and away from the structure. It is a simple machine, but every link in that chain can fail. The float switch is the most common culprit, sometimes it sticks in the down position and never turns on, other times debris or a shifted pump wedges it so it never shuts off and the motor burns out. We diagnose the whole system, not just the pump, so you are not back in the same spot next storm.

Signs your sump pump needs attention

• The pump runs constantly or short-cycles on and off, a classic sign of a bad float switch or an undersized pump
• Standing water or persistent dampness in the crawlspace even after the pit is supposedly draining
• Loud grinding, rattling, or humming with no water actually moving
• Rust, corrosion, or mineral scale on the pump and fittings from our hard local water
• A discharge line that dumps water right next to the foundation instead of carrying it away
• A pump more than seven to ten years old that has never been serviced
• No backup system, so a power outage during a storm leaves you completely unprotected

That last point matters more than people think. Winter storms and grid outages tend to arrive together, and a standard sump pump is useless without electricity. We install battery backup pumps that switch on automatically when the power drops, buying you hours of protection while the main pump is down. For homes with a history of flooding, a backup is not a luxury, it is the difference between a dry crawlspace and a five-figure water damage claim.

Proper installation is about far more than dropping in a new pump. We size the unit to your basin and expected water volume, seat the float so it moves freely, install a check valve so water does not drain back into the pit, and route the discharge line far enough from the house that the water cannot circle back toward the slab. On the slab-on-grade foundations common across Alhambra, Arcadia, and San Marino, keeping water away from the perimeter is what guards against soil movement, cracking, and mold. Before we leave, we test the full cycle, pouring water into the pit and watching the pump start, clear the basin, and shut off cleanly.

If your crawlspace floods every winter, your pump is showing its age, or you want a battery backup installed before the next atmospheric river rolls through, it is worth handling now rather than during the storm. Call E.T. Plumbing at (818) 266-0213 to have your sump system inspected, repaired, or replaced by a licensed local plumber who understands how San Gabriel Valley homes take on water.