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“E. coli bacteria contamination warning sign at Grand Canyon National Park water source near Phantom Ranch”
Sustainable Living

E. coli Detected in Grand Canyon National Park Water Supply: Updated Analysis and Ongoing Concerns

In August 2023, the National Park Service (NPS) confirmed that Escherichia coli (E. coli) bacteria were detected in the water supply serving Phantom Ranch at the bottom of…

February 20, 2026 8 min read