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Preventive controls for maple products - Lead residues


The presence of lead (Pb) in foods can be hazardous to human health. It can produce subtle but adverse long term health effects, particularly in children. Lead residues can be found in maple products, especially when produced with lead containing equipment.

According to Health Canada, the presence of lead in maple syrup, at levels of 0.5 parts per million (ppm) or more, suggests that avoidable contamination has taken place. Lead levels for other maple products have not yet been established.

Avoid, reduce or eliminate lead in maple products

Sources of lead include equipment:

It has been reported that a significant portion of the lead is concentrated in the sugar sand suspended in the syrup, even if a large percentage is in a dissolved form. Therefore, filtration systems such as gravity filtration and press filtration may reduce lead levels in maple syrup. A laboratory analysis would confirm whether the residue level was successfully reduced below 0.5 ppm.

To help identify, reduce and eliminate possible sources of lead contamination, numerous resources can be used, including:

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