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Environmental health investigations branch

Environmental Health Investigations Branch

Mercury in Fish

Fish and shellfish are an important part of a nutritious and healthy diet.  However, some fish contain mercury and other chemicals that may be harmful to your health. This page can help you and your family make healthy choices about which and how much fish to eat, especially if you fish in California's water bodies.

 Online Courses (continuing medical education credits available)
These free, one-hour online courses are for physicians, health professionals, and others interested in mercury and fish.
 California Fish Advisories
Fish advisories provide information to make healthy choices on eating fish caught in California.
 Northern California Fish Brochures
Sacramento-San Joaquin Delta Program
  • Delta Mercury Exposure Reduction Program Materials - Sacramento-San Joaquin Delta Conservancy web page for Central and South Delta; Sacramento River and Northern Delta; and San Joaquin River regions.
  • Page includes advisories on how much and which fish to eat from these regions. This information is also available in brochures and flyers in nine languages (Chinese, English, Hmong, Khmer (Cambodian), Laotian, Russian, Spanish, Tagalog, Vietnamese).
Lake Nacimiento Project



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