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Massachusetts · Framingham County · Lake

Cochituate, Lake (including Middle, North, South, and Carling Basins)

Is the fish you caught here safe to eat? Below is every consumption advisory on file for Cochituate, Lake (including Middle, North, South, and Carling Basins), by species and size, in plain English — plus what's legal to keep.

2 species with advisories · contaminants: PCBs, PFAS

Massachusetts also has statewide guidance

Massachusetts publishes rules that apply to lakes across the state — 1 recommendation covering 1 species — in addition to anything listed for Cochituate, Lake (including Middle, North, South, and Carling Basins) below.

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

See all Massachusetts statewide guidance →

What's safe to eat from Cochituate, Lake (including Middle, North, South, and Carling Basins)

American Eel

PCBs PFAS

SizeWhoGuidance
All sizes General population Do not eat due to elevated PCB and PFAS.

Source: official advisory· updated 2026-07-02

All Other Species

PCBs PFAS

SizeWhoGuidance
All sizes General population Limit to 6 meals per year due to elevated PCB and PFAS.
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 PCB and PFAS.

Source: official advisory· updated 2026-07-02

How to prepare fish from Cochituate, Lake (including Middle, North, South, and Carling Basins)

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 Massachusetts'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 12" min 5 Year-round Same as open
Smallmouth Bass 12" min 5 Year-round Same as open
Northern Pike 28" min 2 Year-round Same as open
Chain Pickerel 15" min 5 Year-round Same as open
Walleye 14" min 5 Year-round Same as open
Inland Trout 3 Year-round Same as open

Official rules: Massachusetts — Massachusetts DFW

Getting on the water

Access points from OpenStreetMap contributors.

About this water

State
Massachusetts
County
Framingham
Type
Lake
Location
42.3190, -71.3782
Advisory source
Massachusetts DPH — Freshwater Fish Consumption Advisory List