Authorities have issued a boil water advisory for the Phantom Ranch area of Grand Canyon National Park after discovering E. Coli bacteria in the water supply.

The National Park Service revealed the presence of these bacteria on Friday and highlighted the heightened health risks, particularly for those with compromised immune systems.

"These bacteria can make you sick and are a particular concern for people with weakened immune systems," said a park news release.  

The impact of the issue is currently contained within the confines of Phantom Ranch and its immediate surroundings. As a preventive measure, residents in this region are advised to boil water before use.

The contamination could have originated from runoff contaminating the water source or problems in the distribution and treatment procedures.

Notably, Phantom Ranch, a well-liked lodge managed by the park system, is located within the impacted zone.

"Bacterial contamination can occur when increased run-off enters the drinking water source," the news release added. 

Read more: Global report says drug-resistant infections are killing millions