Environmental Health

Welcome to the Environmental Health Web site, provided by the Merced County Health Department's Division of Environmental Health. This Web site provides information about environmental health services, laws, and related news, as well as communication tools and other features.

NEW - FDA Order Pertaining to Partially Hydrogenated Oils (PHOs) Effective June 18, 2018

New Onsite Wastewater Treatment Unit (OWTS) Fact Sheet and Ordinance:


Office Closure Information
Closed County Holidays
If you have an Environmental Health emergency and we are closed, please call the CALFIRE-Mariposa Dispatch Office at (209) 966-3621.