The Tower had that well in hand because of its obvious importance to military readiness, but it meant they weren't paying as much attention to the equally important salt shortage, which, if it continued, would make it harder for ordinary people to make it through the winter as the costs of preserved meats from the butcheries would skyrocket.
@RandomOTP I think we could have another avenue to repair Goketsu finances to complement gold and iron extractions. Do you still have any interest in the salt shortage Leaf is facing? I think we largely looked past it after obtaining silk. I figure we could ask Cannai and Kumokugo to setup 7p salterns for us to address this, and that's with the increasing value of salt in mind. The only issue I can see would be collection and transport, which will be time consuming.