There are several water-based defenses in Die2nite. I know that upgraded Water Turrets consume water each night - but what about the other water-based defenses: Automatic Sprinklers and Pressure Washer?
And how about the warning you get about some defenses not working when the well is empty. Which defenses require that the well contains water? And how much is needed? What happens if there is too little water? Does Water Turrets turn completely off -- or do they still provide the unupgraded 60 defense?