The drinking water distribution system is the last protective barrier before the consumers' tap. A well-maintained and operated distribution system is therefore a critical component of providing safe drinking water. This webinar will present information included in a new guidance document prepared by Health Canada in collaboration with the Federal-Provincial-Territorial Committee on Drinking Water. Information to be covered includes: the direct and indirect health effects of water quality deterioration in the distribution system; factors that contribute to water quality deterioration; monitoring methods or parameters that are available to determine if water quality changes are occurring; and strategies that can be used to manage these changes. Practical applications of the suggested guidance will also be presented by two municipalities.