But combine that with someone dumping thousands of gallons of wastewater into the ground basically across the street and weirder things are going to happen.

EDIT: Yeah, I don't think they are dumping water into the ground. Scratch that out. These datacenters DO use lots of water, as in millions of gallons per day, the concern there is more about how the public utilities and incentives were structured. [Quote for millions comes from Kate Crawford's Atlas of AI book, but the link was the the first data I could source, which looks less than that.]

I'm now thinking this article may be more about the person not liking the datacenter than it specifically affecting the well. Could construction cause some extra sediment to clog up the well intake? Seems likely.