Table 3.

The presribed values of mercury in the world.

Origin of rules	Media	Value	Size
Canada	Drinking water	1 μg/l	MAC
Canada	Fish	0.5 ppm total mercury
WHO	All sources	0.47 μg/kg TM daily as methyl-mercury 0.71 μg/kg TM daily methyl-mercury + inorganic	TDI
WHO	Drinking water	0.001 mg/l total	GV
JECFA	All sources	5.0 μg/kg TM weekly as total mercury 3.3 μg/kg TM weekly as methyl-mercury	PTWI