Most of the time, heating and water supply are two different animals.
There is also a combined system that you can get.
The first thing you need to know is the city pressure, which you can find out by gauging it. They sell the gauges that fit on a hose fitting in the irrigation departments.
If you are between 30 and 80 psi, then you are fine.
Under that and you may want a booster pump, over that and you should have a pressure reducer.
In floor heating systems don't use very much pressure and may need to be reduced.