According to who the lowest harmful level of mercury for humans is 5 ppm
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An average woman weighing 60 kilograms can ingest 60 x 0.1 = 6 micrograms of mercury per day without exceeding the EPA reference dose. If each gram of fish contains 0.2 micrograms of mercury, our average woman could only eat 6/0.2 = 30 grams of fish per day without exceeding the EPA reference dose. Thus one good-sized serving of fish per week is about all that is safe, if the fish are contaminated at average levels.
EPA says that the fish species that people prefer to eat are contaminated at a level of only 0.12 to 0.14 ppm. At this level of contamination, our average woman could safely eat 46 grams of fish per day, or 322 grams per week.
Some people prefer to eat species of fish that accumulate large amounts of mercury: shark, swordfish, sea bass, walleye and largemouth bass can contain 0.5 to 1.0 ppm or more. At these levels of contamination, consumption must be strictly limited to remain within EPA's guidelines.
EPA says that the fish species that people prefer to eat are contaminated at a level of only 0.12 to 0.14 ppm. At this level of contamination, our average woman could safely eat 46 grams of fish per day, or 322 grams per week.
Some people prefer to eat species of fish that accumulate large amounts of mercury: shark, swordfish, sea bass, walleye and largemouth bass can contain 0.5 to 1.0 ppm or more. At these levels of contamination, consumption must be strictly limited to remain within EPA's guidelines.
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