New EPA Indoor Air Quality Regulations Take Effect in Washington

New EPA regulations taking effect this month require commercial buildings in Washington State to meet stricter indoor air quality standards, affecting office spaces, retail locations, and schools.

Commercial HVAC air filtration system

Key Requirements

Buildings must now maintain CO2 levels below 800 ppm and install MERV-13 or higher filtration. Property managers have until June to comply or face fines up to $5,000 per violation.

The Puget Sound Clean Air Agency offers free compliance assessments for small businesses through their website.

Sarah Chen

Sarah Chen

Author & Expert

Environmental scientist specializing in Pacific Northwest air quality and indoor air health.

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