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Lake Huron (Main Basin) — fish advisory record

27species with an advisory recorded
7contaminants named
404advisory rows on file

open water south of Manitoulin Island to Point Edward|eaux libres au sud de l'île Manitoulin jusqu'à Point Edward

This site does not tell you how much fish to eat

The Guide to Eating Ontario Fish publishes, for each waterbody, species and size, how many meals of that fish are advised. Those meal numbers are not reproduced here, and this site does not give consumption advice.

The reason is specific. The published data records the advisory as a numeric code whose meaning is defined in the Guide's own codebook. Turning that number into "so many meals a month" without the codebook would be this site inventing health advice from a number it cannot read — and if it read the number wrongly, it would be telling people the wrong thing about fish they are about to eat.

So this site does the part it can do from the record alone: it tells you whether a waterbody carries an advisory, for which species, and which contaminant the advisory is named against. Then it hands you to the publisher for the numbers.

For the actual advice, read the guide: Guide to Eating Ontario Fish on ontario.ca. It is the authority. This site is not, and nothing here should be used as a substitute for it.

Species with an advisory recorded

For each species, the contaminants the advisory is recorded against, how many length categories are covered, and which population groups the Guide publishes a separate advisory for.

Advisory recorded for this waterbody, by species
SpeciesContaminant recordedLength categoriesPopulation groups
Atlantic SalmonPCB, PFAS1General, Sensitive
BowfinPFAS1General, Sensitive
Brown BullheadMercury, PFAS PFAS3General, Sensitive
Brown TroutPFAS13General, Sensitive
Burbot (Ling)Mercury, PFAS PFAS12General, Sensitive
Channel CatfishMercury, PCB PCB11General, Sensitive
Chinook SalmonPCB PCB, PFAS PFAS12General, Sensitive
Cisco (Lake Herring)Mercury, PFAS PFAS9General, Sensitive
Coho SalmonMercury, PCB PCB PCB, PFAS PFAS12General, Sensitive
Common CarpMercury, PCB PCB PFAS13General, Sensitive
Freshwater DrumMercury Mercury, PFAS PFAS8General, Sensitive
Lake TroutMercury, PCB, PFAS PCB PCB, PFAS PFAS12General, Sensitive
Lake WhitefishPCB, PFAS PFAS13General, Sensitive
Largemouth BassMercury PFAS2General, Sensitive
Longnose SuckerPFAS7General, Sensitive
Northern PikePFAS10General, Sensitive
Pink SalmonPFAS6General, Sensitive
PumpkinseedPFAS1General, Sensitive
Rainbow SmeltPFAS2General, Sensitive
Rainbow TroutPCB PFAS11General, Sensitive
Rock BassPFAS2General, Sensitive
Round WhitefishPFAS7General, Sensitive
Smallmouth BassMercury Mercury, PFAS PFAS9General, Sensitive
WalleyeMercury Mercury, PFAS PFAS10General, Sensitive
White PerchMercury, PFAS PFAS3General, Sensitive
White SuckerPFAS7General, Sensitive
Yellow PerchPFAS5General, Sensitive

The number of meals advised for each of these is in the Guide to Eating Ontario Fish — not on this page, and not on this site.

Contaminants recorded

The contaminants this waterbody's advisories are recorded against. This counts advisory rows, not risk.

Advisory rows by contaminantThe contaminants the advisories for this waterbody are recorded against.0100200300400500Mercury: 13MercuryMercury, PCB: 6Mercury, PCBMercury, PCB, PFAS: 1Mercury, PCB, Mercury, PFAS: 23Mercury, PFASPCB: 45PCBPCB, PFAS: 20PCB, PFASPFAS: 296PFASSource: Guide to Eating Ontario Fish advisory database, Ontario.

Scroll the chart sideways to see all of it.

Source: Ontario — Guide to Eating Ontario Fish: Advisory Database.

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About this record

Which Ontario lakes and rivers carry a fish consumption advisory, for which species, and which contaminant the advisory is recorded against. The guide that publishes the meal advice is linked on every page.

Source: Ontario — Guide to Eating Ontario Fish: Advisory Database — Open Government Licence – Ontario. Data refreshes as published. Every page links the row it came from.

What this site is not. It is a copy of an official record. It is not a judgement about any business, building or person, and it is not advice. If the record is wrong, the source above is where it is corrected.