It is interesting to try and work out what would have happened without our heroic operator/QC present. Yes, obviously - or perhaps not, to some - no designer o

It is interesting to try and work out what would have happened without our heroic operator/QC present. Yes, obviously - or perhaps not, to some - no designer of the physical plant in their right mind would consciously spec the ability to raise levels so high so quickly. The thinky box can ask for whatever it wants but that don't make it so. That said, for that sort of town it should only require a tonne or so per hour NaOH to raise to that level. Which is throughput you can get from any generic . Depends on the tank size, and how much NaOH is in reserve, I can see one of the outcomes being "yo, why's the hydroxide tank empty?". Or "customers reporting funny tasting [but not harmful] water". I'm not convinced that dangerous levels were impossible, however, and I was expecting to be.