And the specs for a system of gearboxes, transmissions, and a shaft that can take the torque at that length to run those pumps would scare off even the wealthiest city, not to mention, NO.
Your solutions are great for an unlimited budget and a starry-eyed technology, but we have to deal with the real world, in which pumps and motors live within certain limits in order to be affordable and work consistently without inordinate maintenance.
While we're at it, let's just build a dome over the whole city, air condition it, and protect it from all kinds of bad things.
You can't just drop a rock in a canal and stop the water. You can't just thread drive shafts all over a pump house, and you can't tell a city what technology they should've had in place when it is nowhere near realistic.