The water tank is a camp building that is used to store Resource-drinking water drinking water, Resource-dirty water dirty water, and Resource-toxic water toxic water. With each additional water tank you built, extra storage space is granted. Please note that all water tanks share the same value of water stored, therefore if you have two water tanks both at 40, then you only have 40 water, not 80.  

Level Materials Required Storage Cap
1 Initially Available 20
2 120Plastic 60Scrap metal15Screw 40
3 200Plastic 100Scrap metal25Screw 60
4 280Plastic 140Scrap metal35Screw 80 (max)