What am I looking at?

This Map displays the locations of all the CWW monitoring stations. These monitoring stations are represented with a color that corresponds to the status of the real time groundwater quality of that respective site.

How do I use this?

Zoom in and out the map to either view all the stations at once or any one station in particular. Select a station on the map to be directed to a web-page containing the detailed real-time water quality data of that respective site.

What does this information mean?

The monitoring stations are represented with a color that corresponds to the status of the real time groundwater quality of that respective site. Stations represented in green, state that the groundwater quality is normal or that no anomalies/changes have been detected. Stations represented in yellow or red, state that an anomaly has been detected and that something has changed in the groundwater quality since it was last tested. The real time data is analyzed by an anomaly detection system (Canary, developed by USEPA); and any change detected by the system triggers the color of a monitoring station on the map to change to either yellow or red, based on the intensity of detection.

For more information about the anomaly detection system, please visit here

For more details about the anomaly detection system, please visit here