I feel like it’s mostly temperature. I expect that they want to continue using untreated water to be able to have cooler temperature. That way they’re not having to spend money and time cooling their coolant down.

That’s my expectation anyway.

Reading the datasheet that someone else posted earlier on, it seems like that’s the case while they’re going to be doing temperature control. They’re making sure that the temperature stays within the criteria that they currently are required to do. And as such, means that they’re not having too cool it as much.