2 Kings 2:19-22

19Then the men of the city said to Elisha, “Please note, our lord, that the city’s location is good, as you can see. But the water is bad and the land is unfruitful.”

20“Bring me a new bowl,” he replied, “and put some salt in it.”

So they brought it to him, 21and Elisha went out to the spring, cast the salt into it, and said, “This is what the LORD says: ‘I have healed this water. No longer will it cause death or unfruitfulness.1’”

22And the waters there have been healthy to this day, according to the word spoken by Elisha.