Revelation 8:11

8:11 The name of the star is called "Wormwood." One third of the waters became wormwood. Many people died from the waters, because they were made bitter.
-World English Bible

Other Translation

8:11 And the name of the star is called Wormwood: and the third part of the waters became wormwood; and many men died of the waters, because they were made bitter.
-King James Version