In Pacific, mold in walls most often follows White River flooding, which can soak drywall and insulation well above the visible water line. Wet materials are cut out, the framing is cleaned and dried, and the city requires permits or floodplain approvals for repairs to flood-damaged property. Call the number on this page to be connected with a local mold remediation company in Pacific.
Wall mold after the White River came through
Pacific is a small city of about 7,200 people on the lower White River, also called the Stuck River, between Auburn and Sumner and about 25 miles south of Seattle. Most of it is in King County, with a small portion in Pierce. The river has a long flood history here. Record November rains in 2006 pushed it over its banks along Pacific City Park and created a temporary 25-acre lake, and in January 2009 water releases from Mud Mountain Dam flooded the city with almost no notice. Early on Dec. 16, 2025, a White River levee breached and flooded a large part of the city; more than 200 homes were affected and over 600 people were displaced. In homes that took on water, the walls are where mold tends to hide afterward.
What to do now
- Make sure the house is safe to enter and power to wet circuits is off.
- Photograph every room, including the water line on walls, before removing anything.
- Call your insurer; the city notes homeowners insurance doesn't cover floods.
- Pull out wet carpet, pad and furniture so walls can start drying.
- Have wet drywall and insulation cut out above the water line; EPA says to assume mold if a flooded home couldn't be dried within 24 to 48 hours.
- Check with the city before rebuilding.
What you see and why
| What you see | Likely cause |
|---|---|
| Mud line partway up the drywall | Floodwater; drywall above the line may still be wet from wicking |
| Musty smell weeks after the water left | Wet insulation inside closed walls |
| Bubbled paint and soft drywall near the floor | Water that soaked in and never dried |
| Spotting on a wall that never touched floodwater | High indoor humidity from wet materials elsewhere in the house |
Cost factors
Angi's Seattle cost guide reports about $825 to $16,550 for wall mold work and around $825 to $2,400 for drywall replacement. After a flood, the total depends on the flood height, the number of rooms, whether exterior sheathing is wet, and how long drying takes. The City of Pacific says repairs to flood-damaged property need building permits and/or floodplain development approvals, and it publishes guidance on cleaning up damaged structures in the floodplain; Community Development handles those permits. Check any company's registration with Washington L&I as a construction contractor on L&I's Verify a Contractor tool.
Mold in Walls & Drywall questions in Pacific
What should I do with walls that got wet in a flood?
Do I need a permit to replace drywall after mold removal?
Will homeowners insurance cover mold inside a wall?
How long does wall mold remediation take?
More mold services in Pacific
Mold in Walls & Drywall nearby
Helpful guides
Sources
- Wikipedia: Pacific, Washington
- City of Pacific: 2025 Flood
- Fox Weather: Over 200 homes affected by levee breach in Washington town
- City of Pacific: Building Inspector/Code Enforcement job description (pdf)
- EPA: Homeowner's and Renter's Guide to Mold Cleanup After Disasters (pdf)
- Angi: How Much Does Mold Remediation Cost in Seattle, WA?
- L&I: Verify a Contractor, Tradesperson or Business
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