19 The men of the city said to Elisha, “Please now, the location of the city is good, as my master can see, but the water is bad and the land unproductive.”
20 So he said, “Bring me a new bowl and put salt in it.” So they brought it to him.
21 Then he went out to the spring of waters and threw the salt into it there and said, “Thus says Yahweh, ‘I hereby purify these waters; let there be no longer any death or unproductiveness from it.’ ”
22 Then the waters were purified until this very day according to the word of Elisha that he spoke.
2 Kings 2:19–22 (LEB)