Short and long term drinking water advisories that are in place in First Nation communities on reserve located in Canada. Drinking water advisories are preventive measures put in place to protect public health from drinking water that could be contaminated. In a First Nation community, a drinking water advisory can affect as little as one building and does not always represent a community-wide drinking water problem. Drinking water advisories are put in place for various reasons. For instance, a community may issue an advisory if there are problems in the overall water system, such as line breaks, equipment failure, or poor filtration/disinfection during water treatment. Communities may also choose to issue a drinking water advisory as a precautionary measure, such as when there are emergency repairs in the water distribution system or if a community does not have a trained Water System Operator or Community-based Drinking Water Quality Monitor in place.

The Air Quality Health Index (AQHI) is a scale designed to help quantify the quality of the air in a certain region on a scale from 1 to 10. When the amount of air pollution is very high, the number is reported as 10+. It also includes a category that describes the health risk associated with the index reading (e.g. Low, Moderate, High, or Very High Health Risk). The AQHI is calculated based on the relative risks of a combination of common air pollutants that are known to harm human health, including ground-level ozone, particulate matter, and nitrogen dioxide. The AQHI formulation captures only the short term or acute health risk (exposure of hour or days at a maximum). The formulation of the AQHI may change over time to reflect new understanding associated with air pollution health effects. The AQHI is calculated from data observed in real time, without being verified (quality control).

The Air Quality Health Index (AQHI) is a scale designed to help quantify the quality of the air in a certain region on a scale from 1 to 10. When the amount of air pollution is very high, the number is reported as 10+. It also includes a category that describes the health risk associated with the index reading (e.g. Low, Moderate, High, or Very High Health Risk). The AQHI is calculated based on the relative risks of a combination of common air pollutants that are known to harm human health, including ground-level ozone, particulate matter, and nitrogen dioxide. The AQHI formulation captures only the short term or acute health risk (exposure of hour or days at a maximum). The formulation of the AQHI may change over time to reflect new understanding associated with air pollution health effects. The AQHI is calculated from data observed in real time, without being verified (quality control).