Red water definitely has some biblical associations, or at least smacks of a horror movie.

It could also just be a part of your morning commute if you strolled by the Dupont Circle fountain on Monday morning.

When Alexa Silverman walks through Dupont Circle en route to work, she says she usually looks at the fountain.

“I noticed it was a dark red color and it looked a little bit like blood,” Silverman says. “It was definitely a bit of a shocking sight this morning.”

The National Park Service received reports of a new scarlet hue for the water in the fountain, and sent out crews to investigate, says spokesperson Brian Hall. NPS is in charge of more than 60 different water features in parks spanning the District.

The crews found “some sort of powdered dye added to the water in the fountain,” says Hall. “The dye itself was a really weak dye, so it is almost filtered all the way out.”

NPS workers are draining the fountain on Monday, and plan to clean and refill it on Tuesday, per Hall.

Hall says that NPS notified U.S. Park Police about the red water in the fountain. Any investigation into the powered dye would come from them. We’ve reached out to Park Police for comment.

Back in 2016, the landmark fountain was drained after a green algae invasion, which was caused by a clogged intake line.

This post has been updated with information from Brian Hall about what the NPS crew found at the Dupont Circle fountain.