Leviticus 11:36

But a fountain and pit, a gathering of waters, shall be clean: and he touching upon their carcass shall be unclean.

Zechariah 13:1

In that day shall be a fountain opened to the house of David and to the inhabitants of Jerusalem, for sin and for putting away.

John 4:14

But whoever should drink of the water which I shall give him, shall never thirst; but the water which I shall give him shall be in him a spring of water springing up to eternal life.

Treasury of Scripture Knowledge

Summary

Nevertheless a fountain or pit, wherein there is plenty of water, shall be clean: but that which toucheth their carcase shall be unclean.

Bible References

A fountain

Zechariah 13:1
In that day shall be a fountain opened to the house of David and to the inhabitants of Jerusalem, for sin and for putting away.
John 4:14
But whoever should drink of the water which I shall give him, shall never thirst; but the water which I shall give him shall be in him a spring of water springing up to eternal life.