In the Central Valley, mold isn’t just a seasonal nuisance—it’s a year-round threat hiding behind drywall, under sinks, and inside HVAC systems. With the region’s mix of foggy mornings, leaky roofs, and tightly sealed homes, moisture can linger long enough to invite unwanted fungal guests.

September is observed nationally as Mold Awareness Month. Here’s how to spot mold, stop it, and stay ahead of it.

Know The Signs

Musty odors even when everything looks clean

Discoloration on walls, ceilings, or window sills—especially green, black, or white patches

Condensation on windows or pipes

Persistent allergy symptoms like sneezing, coughing, or itchy eyes indoors

Prevention Starts With Ventilation

Run bathroom and kitchen fans during and after use

Open windows when weather permits to increase airflow

Use a dehumidifier in basements or poorly ventilated rooms

Stop Moisture At The Source

Fix leaky roofs, pipes, and appliances immediately

Check for standing water in crawl spaces or under sinks

Seal gaps around windows and doors to prevent rain intrusion

Clean Smart, Not Just Hard

Scrub small mold patches with soap and water, not bleach (which doesn’t penetrate porous surfaces)

Remove and replace moldy drywall, carpet, or insulation

Never paint over mold—it just traps the problem

Know Your Rights

If you’re renting and mold makes your unit uninhabitable, California law requires landlords to remediate it promptly under SB 655. Document everything and report issues in writing.