WHAT
If you're annoyed by settlement NPCs continuously hogging the waterpumps instead of doing more important things like blocking the workbenches or complaining about their fingernails this is the mod for you.

HOW
Well it's hardly even a mod, all it does is check the "ignored by sandbox" flag on the WaterPump01Furn

COMPATIBILITY
Should be high unless you have some mods that require NPCs using waterpumps for whatever reason.