Example: [Collected via Reddit, June 2013]
Origins: This image of a sinkhole filled with a bright green "radioactive"-looking fluid was posted to reddit by Philadelphia-area photographer Steven Reitz on
According to the Philadelphia Water Department (PWD), the sinkhole along Randolph Street near Girard Avenue acquired its unusual appearance due to the PWD's use of a non-harmful food dye employed to help trace issues with the water infrastructure:
Philadelphia Water Department spokeswoman Laura Copeland said that the green-looking fluid is actually a "harmless food dye" used as a
"Since most of our infrastructure is outside, we mainly use the green dye as it is the most visible and can be seen at the greatest distance in our infrastructure," Copeland said.
Green is not the only hue on the palette of problem-solving colors. They also use blue and red dyes to differentiate other sources of a break, especially when working inside a home, Copeland said.
The colored water doesn't pose a threat to the general public, according to officials.
Last updated: 18 March 2015
Stamm, Dan. "'Radioactive-Looking' Sinkholes." WCAU-TV [Philadelphia]. 18 June 2013.