I'm thirsty for new resources so why not add water, a vital resource for human survival.  Water would function similiar to food but it could serve more functions (dams for power, etc.) Water would also be required like food, and unlike food can be contaminated or polluted by nukes. Contaminated water would raise disease and lower population. To lower contaminated water levels you would build water treatment plants. Water production itself could be increased by a water reclamation plant nati