Trucking in water has gotten expensive for how much they need to make the concrete. $405 usd has been spent on water and its delivery so far. The contractor suggested they dig their own storage unit or cistern to hold 15,000 liters. It will be 3 meters deep (9.8 feet) and 4 meters wide (about 13 feet.) Hopefully someday soon our own personal water line from the government water line will be built. That will cost $2000 to achieve, and there is some red tape involved, but it will get done. In the meantime, this sounds like a good idea to keep construction rolling along.