Yes, you are correct. Nothing is traveling FTL, and that includes the information you would like to transmit through the entangled particles. They have tried it, and it doesn’t work. You need to transmit additional bits of information through traditional methods in order to get any usable information out of the entangled particles. Thus, any message you transmit this way still travels at the speed of light.
I guess the explanation of why is beyond me... but it seems that saying all you need for instant water, is the water.