[NathanR]

That was tried. The problem is that the fire companies actually set fires in order to drum up business.

[ASA Vet]

Also the early fire companies would fight each other to get first water on a fire.
Payment and honor went to that first company.

In the wooden water main days they had to dig a hole then cut a hole in the main.
When finished they put in a wooden plug.
That's the source of the term "fire plug" being used for a hydrant.

The fire company had some real big guys who when an alarm was sounded
would race ahead to a water main location protect it from other incoming fire companies.
These gentlemen were called "plug uglies."

I doubt if we'll have to fight with any "plug uglies" for the water on Mars.