Health Canada

This guideline technical document outlines the evaluation of the available information on calcium, magnesium, hardness, chloride, sulphate, total dissolved solids (TDS) and hydrogen sulphide with the intent of updating the guideline value for these operational parameters in drinking water. The...

Learn about calcium and how to get enough.

The U.S. Institute of Medicine (IOM) released its report on the review of the Dietary Reference Intakes (DRIs) for vitamin D and calcium on November 30, 2010. The review was jointly commissioned and funded by the U.S. and Canadian governments.

There is no evidence of adverse health effects specifically attributable to calcium in drinking water. Insufficient data are available to set a specific value for an aesthetic objective for calcium in drinking water. A guideline for calcium has therefore not been specified.