Where can i find the different water types so i can remove the HP re gen from them??

You would expect to find them under Items somewhere, but they're not there. They're actually under Game Effects -> Ingestible

No there you only find the water that is in bottles, i want to locate the water that is in sinks, bathtubs, lakes and other water locations.

That's an engine item as far as I know. If you're in hardcoe mode it won't heal you, then it's a display bug.

If you're not in hardcoe mode, then I believe it's a global setting, but I'm not 100% positive.

Activators like sinks have references to a water type. Water types have references to an actor effect. The actor effect is where the healing is.

Under Actor Effects. Look for "WaterTypeHeal"...there are six listed I believe (Pure, Good, Average, Bad, Terrible, and Lethal). This should remove healing from hydrants, lakes, etc. It won't remove it from bottles or other ingestibles however.

Thanks a million for all your answers, i found it and removed the healing effect.

I've been playing around with it for a personal hardcoe mode. Making the waters around New Vegas a bit less "pure" and less refreshing.

Still trying to figure out how to attach an effect that fires a script that has a random chance of making you briefly sick if you drink from the level 4 or 5 waters. (And I still need to adjust toilets... downward... far downward... on the healthy scale.)

It will heal you.

The difference between water in hardcoe vs regular.

Regular - you get the 30hp (or whatever) immediately.
hardcoe - It's usually something like 5hp every second for 6 seconds.

(Which holds true for a lot of things in hardcoe vs regular, there's a lot more heal over time setups.)