I've been doing most of my cooks between 275-325 so I ditched the water. At my altitude, I was unable to break 250 with everything wide open and water in the pan. Haven't noticed a difference in quality other than my quality of extra sleep. Not to mention I still have a huge dead spot in my grass from where I accidentally dumped my water the last time I used it.
WSM 22 ~ WSM 18 ~ Maverick ET-732 ~ Flaming Fast Thermapen ~ Weber SS Performer ~ Weber 22 OTS ~ Weber 22 OTS ~ Weber 22 OTPlus ~ Weber 22 OTS ~ Weber Q300
When all else fails just ask yourself, WWGALD???