Colored leaks are "lost," while leaks in gray are "found."

"Found" leaks were not listed as repaired, but were reported in the 2015 data.

Gas leaks are reported in Grades 1 to 3, with 1 being the most severe and 3 being the least severe. The radius of the circle is based on how long ago the leak was reported. Newer leaks have smaller circles while older leaks have larger ones .

Click the circles on the map to view more information about specific lost leaks, and click the checkboxes on the left side of the map to view each grade individually.