| | | Environmental Health ContactsFor information or questions related to water quality and treatment, consumer protection, hazardous materials, and waste management, please contact the environmental health services in your county of residence. ![Napa County Seal](/images/Napacountyseal.jpg) Napa County Napa County Environmental Health Division 1195 Third Street, 2nd Floor Napa, CA 94559 Phone: (707) 253-4471 Hours: M–F 8 am–12 pm & 1 pm–4 pm Website: Napa County EH
![Solano County Seal](/images/SolanoCountyseal.jpg) Solano County Environmental Health Services, Solano County Department of Resource Management 675 Texas Street, Suite 5500 Fairfield, CA 94533 Office hours: M–F 8 am–12 pm & 1 pm–5 pm Phone: (707) 784-6765 Website: Solano County EH
![Yolo County Seal](/images/Yolocounty.png) Yolo County Yolo County Environmental Health Division 292 West Beamer Street Woodland, CA 95695 Office hours: M–F 8 am–12 pm & 1 pm–4 pm Phone: (530) 666-8646 Website: Yolo County EH
![Marin County Seal](/images/Marincounty.png) Marin County Marin County Environmental Health Services 3501 Civic Center Drive, Suite 236 San Rafael, CA 94903 Hours: M–Th 8 am–4 pm Phone: (415) 473-6907 Website: Marin County EH
![Mendocino County Seal](/images/Mendocinoseal.png) Mendocino County Mendocino County Environmental Health 860 N. Bush Street Ukiah, CA 95482 Hours: M–F 8 am–12 pm & 1 pm–5 pm Phone: (707) 234-6625 Website: Mendocino County EH
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