Santa Clara water, storm, smoke and mold damage help

Santa Clara's rain falls almost entirely in winter, its seasonal creeks drain north to the Bay through a largely built-over landscape, and the 1906 earthquake is a reminder that ground shaking can break pipes here too.

Gloved hand checking a damp drywall wall with a moisture meter

Santa Clara sits on the flat floor of the South Bay at about 72 feet, surrounded by San Jose on nearly every side, with Sunnyvale and Cupertino to the west. Three seasonal streams, San Tomas Aquino, Saratoga and Calabazas creeks, cross the city on their way to south San Francisco Bay.

Fire & Water Energy acts as a go-between: a referral service that does not perform any repairs. If you call (866) 937-3230, we will try to connect you with an independent restoration contractor serving Santa Clara, subject to local availability. You can review the steps of a referral and read our disclosure first.

Dry summers, wet winters and a seismic past

Long-term records put average precipitation near 14.5 inches a year, with summers generally rainless and nearly all storms arriving in the cool season. January nights average about 38°F, so frost is possible on the coldest mornings, while July days average in the low 80s.

Earthquakes are part of the city's history: more than 100 people died at the Agnews site in the 1906 earthquake. Santa Clara County has been included in five FEMA major disaster declarations since 2000, including severe winter storms and flooding in 2017 (DR-4301, DR-4308) and 2023 (DR-4683, DR-4699) and the 2020 Wildfires declaration (DR-4558).

What usually causes water damage indoors

Most problems here start inside: water heaters at the end of their life, supply lines to toilets and sinks, dishwasher and fridge connections, and leaks in slab plumbing. The first big storm after months without rain often exposes roof penetrations, clogged gutters and failed window seals all at once.

Someone looking for water damage restoration in Santa Clara generally needs a contractor who can stop the water, remove what cannot be saved and dry the rest with verified readings. The water extraction and structural drying pages explain those steps in more depth.

Federal disaster declarations that included Santa Clara County

FEMA records show Santa Clara County was included in 5 major disaster declarations for weather or fire events from 2000 through 2026 (2 severe storm, 2 flood, 1 fire, by FEMA incident type). Declarations are made at the county level, so they do not mean every neighborhood in Santa Clara was affected. The most recent:

  • 2023 – Severe Winter Storms, Straight-line Winds, Flooding, Landslides, and Mudslides (DR-4699)
  • 2023 – Severe Winter Storms, Flooding, Landslides, and Mudslides (DR-4683)
  • 2020 – Wildfires (DR-4558)
  • 2017 – Severe Winter Storms, Flooding, and Mudslides (DR-4308)
  • 2017 – Severe Winter Storms, Flooding, and Mudslides (DR-4301)

Source: OpenFEMA Disaster Declarations Summaries, retrieved 2026-10-10. Counts include major disaster (DR) declarations with hurricane, flood, severe storm, tropical storm, fire, tornado, coastal storm, winter or ice storm, mudslide and dam/levee incident types.

Water, fire or storm damage in Santa Clara?

Call (866) 937-3230 and tell us what happened at your Santa Clara property.

Call (866) 937-3230

Fire and smoke residue cleanup

Kitchen and electrical fires are the most common residential fire losses, and smoke can travel through an entire home or apartment building in minutes. Even small fires leave soot on walls and ceilings and odor in fabrics.

During regional fire seasons, such as the 2020 fires that led to the county's federal declaration, smoke can also blanket the valley. Smoke damage cleanup usually includes HEPA vacuuming, wiping with dry chemical sponges, cleaning ducts and treating odor; fire damage restoration handles charred materials and rebuilding.

Creeks under the city and winter storm runoff

San Tomas Aquino Creek runs largely underground beneath the San Tomas Expressway median before joining Saratoga Creek just south of Highway 101, and the combined flow continues to Guadalupe Slough. Seasonal creeks and buried channels can back up during intense storms, and street drains in flat areas may pond.

The county's 2017 and 2023 declarations included flooding. Water that enters from outdoors should be treated as contaminated. Flood cleanup usually involves extracting water, removing wet drywall and carpet pad, disinfecting and drying, and storm damage cleanup covers fallen trees and wind damage.

Stopping mold after a winter leak

Cool winter weather slows drying, so a wet wall or carpet can stay damp long enough for mold to start within a few days. Bathrooms, closets on exterior walls and spaces under sinks are typical trouble spots.

The EPA considers mold under about 10 square feet something most homeowners can clean with protective gear. Larger areas, repeat growth, or anything linked to floodwater call for mold removal with containment and a dryness check before rebuilding.

Safety priorities in Santa Clara

  • Call 911 for fire, injuries, gas odors or people in danger from water.
  • After an earthquake, look for broken water and gas lines; close the water main if a pipe breaks and leave if you smell gas.
  • Keep away from wet outlets, cords and appliances, and switch off power at the panel only from a dry spot.
  • Photograph every affected area before cleanup, and keep receipts for emergency costs.
  • Contact your insurer or agent; coverage depends on your policy, and flood and earthquake typically require separate policies.
  • Tenants should notify the property manager in writing.

See all California service areas.

Neighborhoods and nearby communities

Nearby communities with their own pages (straight-line distance from Santa Clara):

Santa Clara restoration FAQs

When is the rainy season in Santa Clara?

Nearly all rain falls in winter, and summers are generally dry. That pattern means roofs and gutters can go months untested, so inspect them in the fall.

Which creeks run through the city?

San Tomas Aquino, Saratoga and Calabazas creeks are seasonal streams that flow north to the Bay. San Tomas Aquino Creek runs mostly under the San Tomas Expressway median in the middle of town.

Can an earthquake lead to water damage?

Yes. Shaking can break supply lines, crack drains and topple unstrapped water heaters. Know where your water and gas shutoffs are and strap your water heater.

Do I need a professional for mold under my sink?

If it is a small area, under about 10 square feet, and the leak is fixed, you can often clean it yourself with gloves and a mask. If it is larger, keeps coming back or followed a sewage backup, a professional is the safer choice.

Who does the work if I call (866) 937-3230?

An independent restoration contractor that serves the area. Fire & Water Energy is a referral service and does not perform or price the work.

Restoration guides

Sources

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