Umm. . . if you are talking about land based extraction like the Alberta Tar Sands for example they put the water in Tailing Ponds idk why there are called ponds as they can be seen from space. . .

Tar is a noun (the tar) and a verb (to tar).

After a setback with the revolving guns and turned to manufacturing waterproof cable made from tar coated copper.?æThis cable was used to run telegraph wire under lakes and ponds.

In maths terms tar tar is another word for calculus

tar mummies are mummies that were preserved in tar