There are signs around Walker waning about this. They are apparently doing tests to see what it is.

I drive by the orange water every day. It’s very similar in color to the dirt nearby. We live in the forest.

ADEQ confirmed the presence of orange liquid and soils near E Sheldon Rd and S Midnight Snap Ln on Mar. 30, 2023, in response to contact from a local resident. As a precautionary measure, authorities are advising individuals to avoid contact with the orange liquid and soil until further notice. Due to recent above average precipitation in the region, this orange liquid may be surfacing in other nearby areas.

Read the entire article at: https://www.allaboutarizonanews.com/adeq-advises-public-to-stay-away-from-orange-liquid-and-soil-in-walker-arizona/