9 verified professionals in Ontario, CA
0 Top Rated, 0 Insured, 9 Licensed
Top choice for Ontario
Our top verified pick for mold remediation in Ontario, CA is ALL US with a 5.0-star rating from 12 reviews. They have active state licensing verified in 2026.
ALL US
Ontario, CA
12 reviews
0 Top Rated, 0 Insured, 9 Licensed
Pacific Coastal
Varies widely by subregion (40-75% average)
Varies widely by subregion (40-75% average)
Cladosporium, Penicillium, Aspergillus
Diverse microclimates from desert to redwood coast. Northern California sees more rain and mold risk. Southern California has wildfire-related water damage from suppression. Central Valley has agricultural humidity.
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