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Aggregate exposure and risk assessments involve the analysis of exposure to a single chemical by multiple pathways and routes of exposure. The pathways of exposure considered in this general principles document include the potential for pesticide residues in food and drinking water, as well as residues from pesticide use in residential, non-occupational environments.

Safety Code 26.

weight, body surface area, inhalation rates, ingestion of dust and soil, and drinking water consumption to ensure consistency of approach. Values that are used are representative of the Canadian general population. Exposure is estimated separately for different age groups because of physiological and psychological differences that may affect exposure.

This document provides an overview of the policy of Health Canada's Pest Management Regulatory Agency in estimating the concentration of pesticides in potential drinking water sources. These estimates are incorporated into aggregate exposure assessments as part of the process of assessing the potential impact of pesticide use on the health of Canadians.

The following policy document is intended to provide guidance and information to the Pest Management Regulatory Agency (PMRA) personnel and decision-makers and to the public. This document describes the processes used by PMRA scientists, in dietary risk assessments (DRA), to quantify the level of food residue exposures to consumers of all ages.

Health Canada and the University of Windsor collected 24-hour personal, indoor, and outdoor exposure samples for 188 polar and non-polar volatile organic compounds (VOCs). A total of 100 study participants in Windsor, Ontario were followed over two 1-year periods. Sampling took place in 8-week winter and summer periods of 2005 and 2006. In 2005, five consecutive 24-hour VOC sampling measurements were obtained to represent indoor, outdoor, and personal exposure levels.

This Human Health Risk Assessment for Ambient Nitrogen Dioxide (NO2) is a comprehensive review of the most relevant health- and exposure-related science for this air pollutant, prepared by the Air Quality Assessment Section of Health Canada.

This Guideline Technical Document focuses on the health effects related to exposure to chlorine in drinking water supplies. It does not review the benefits or the processes of chlorination, nor does it assess the health risks related to exposure to by-products formed as a result of the chlorination process.

This guideline technical document focuses on the health effects related to exposure to chloramines in drinking water supplies, also taking into consideration taste and odour concerns. It does not review the benefits or the processes of chloramination; nor does it assess the health risks related to exposure to by-products formed as a result of the chloramination process.

This guideline technical document reviews and assesses all identified health risks associated with tetrachloroethylene in drinking water, incorporating all relevant routes of exposure from drinking water—namely, ingestion as well as inhalation and skin absorption from showering and bathing. This guideline technical document reviews and assesses all identified health risks associated with tetrachloroethylene in drinking water, incorporating all relevant routes of exposure from drinking water—namely, ingestion as well as inhalation and skin absorption from showering and bathing.