Leviticus 11:36

A spring or a cistern holding water will remain clean. But anyone who touches their dead bodies will be unclean.

Zechariah 13:1

A fountain for sin and for uncleanness will be opened for the house of David.

John 4:14

But whoever drinks from the water that I give him will never thirst. The water that I will give him will be in him a well of water springing up into everlasting 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
A fountain for sin and for uncleanness will be opened for the house of David.
John 4:14
But whoever drinks from the water that I give him will never thirst. The water that I will give him will be in him a well of water springing up into everlasting life.