MC Command Center's Tuner Module will allow you to turn off Get Water, AND a few other Annoying Actions.
Nothing will work properly with the patched game files except the 3.0.1 Hotfix Deaderpool released Yesterday. (3.0.0 works but has several errors.)
REDOWNLOAD if you're a previous MC user.
If you're new to, or interested in, MC, fixed version=great time to jump in! :)
Local MC help thread here, come see us :)
http://forums.thesims.com/en_US/discussion/837115/need-help-with-mc-command-center-ask-here#latest/