7 Bible Verses about Bad Water

Does a fountain send forth from the same cavern sweet water and bitter?

And the second angel sounded; and, as it were, a great mountain, burning with fire, was thrown into the sea: and the third part of the sea became blood.

And the second angel poured out his cup on the sea; and it became blood, like that of a dead man: and every soul in the sea died.

And the third angel poured out his cup on the rivers and the fountains of waters; and they became blood.

For they have shed the blood of saints and of prophets, and thou hast given them blood to drink, and they are worthy.

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.

Can the fig-tree, my brethren, bear olives, or the vine, figs? So no fountain can produce salt water and fresh.