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California · Contra Costa County · Reservoir

San Pablo Reservoir

Is the fish you caught here safe to eat? Below is every consumption advisory on file for San Pablo Reservoir, by species and size, in plain English — plus what's legal to keep.

5 species with advisories · contaminants: DIELDRIN, Mercury, PCBs

California also has statewide guidance

California publishes rules that apply to reservoirs across the state — 10 recommendations covering 5 species — in addition to anything listed for San Pablo Reservoir below.

Strictest statewide rule: Bass, Striped — For women who may become pregnant, pregnant or breastfeeding women, and children under 15: do not eat due to elevated Mercury and PCB.

See all California statewide guidance →

What's safe to eat from San Pablo Reservoir

Bass, Black

Mercury

SizeWhoGuidance
All sizes General population Limit to one meal per week due to elevated Mercury.
Women who may become pregnant & children under 15 For women who may become pregnant, pregnant or breastfeeding women, and children under 15: do not eat due to elevated Mercury.

Source: official advisory· updated 2026-09-22

Catfish Species

DIELDRIN

SizeWhoGuidance
All sizes General population Do not eat due to elevated Dieldrin.
Women who may become pregnant & children under 15 For women who may become pregnant, pregnant or breastfeeding women, and children under 15: do not eat due to elevated Dieldrin.

Source: official advisory· updated 2026-09-22

Common Carp

DIELDRIN

SizeWhoGuidance
All sizes General population Do not eat due to elevated Dieldrin.
Women who may become pregnant & children under 15 For women who may become pregnant, pregnant or breastfeeding women, and children under 15: do not eat due to elevated Dieldrin.

Source: official advisory· updated 2026-09-22

Crappie Species

Mercury

SizeWhoGuidance
All sizes General population Limit to four meals per week.
Women who may become pregnant & children under 15 For women who may become pregnant, pregnant or breastfeeding women, and children under 15: limit to two meals per week due to elevated Mercury.

Source: official advisory· updated 2026-09-22

Trout, Rainbow

PCBs

SizeWhoGuidance
All sizes General population Limit to four meals per week.
Women who may become pregnant & children under 15 For women who may become pregnant, pregnant or breastfeeding women, and children under 15: limit to four meals per week.

Source: official advisory· updated 2026-09-22

How to prepare fish from San Pablo Reservoir

Some contaminants build up in fat and skin, so cleaning and cooking can lower your exposure. Others — mercury and PFAS — are in the muscle itself and trimming does nothing.

PCBs

  • Skin the fish — most of the contaminant sits in the fat just under the skin.
  • Trim the fatty areas away: the belly flap, the top of the back, and the dark lateral line down each side.
  • Cook on a rack — grill, broil, or bake — so the fat drips off the fillet.
  • Throw the drippings out; don't use them for soup, sauce, or chowder.
  • Choose smaller, younger fish — they've had less time to build it up.

Is it legal to keep?

These are California's statewide limits — a water-specific rule may override them. Always verify the current regulations before keeping a fish.

SpeciesSizeDaily limitOpen seasonKeep season
Largemouth Bass 5 Year-round Same as open
Smallmouth Bass 5 Year-round Same as open
Striped Bass 18" min 2 Year-round Same as open
Rainbow Trout 5 Year-round Same as open
Black Crappie 25 Year-round Same as open
Channel Catfish 10 Year-round Same as open

Official rules: California — California DFW

Getting on the water

Access points from OpenStreetMap contributors.

About this water

State
California
County
Contra Costa
Type
Reservoir
Location
37.9239, -122.2435
Advisory source
California OEHHA — Fish Consumption Advisories