Water Quality Advisory Notifications


Levels and their Definitions

Water Quality Advisory

A water quality advisory is the lowest-level notification. A water quality advisory is used in situations where the public health threat is modest, and actions can be taken to reduce the risks by ways other than requiring a boil water notice or do not use water notice.

Boil Water Notice

A boil water notice is used in situations where the public health threat is significant and the nature of the threat is one that can be effectively addressed by boiling the water.

Water supply systems may remain on a boil water advisory for an extended period of time due to a substantial concern about the system’s treatment equipment or distribution infrastructure. Infrastructure changes are usually quite costly and require lengthy planning before they can become operational.

If you have a home filter system, you may still need to boil your water, depending on the particular circumstances of your water supply. Consult with your drinking water officer/contact for guidance.

Do Not Use Water Notice

A do not use water notice is the highest-level notification. It is used in situations where a significant public health threat exists and the threat cannot be adequately addressed through a water quality advisory or boil water notice.