Also probably correlated with hotdog consumption...

In all seriousness, how would these be related?

Ok I don’t know a lot about water purification, but playing the devil’s advocate: isn’t it the responsibility of the water purifiers to get rid of nitrates and ensure the drinking water stays within legal limits?

Or is it somehow a very difficult / impossible process to do this?

This article states that wastewater from the center contains nitrates at 56 ppm, but the local wells are testing above 70 ppm. It also targets the vector of contamination as being from percolation to groundwater from water treatment plants, which I'm guessing only a fraction of wastewater has the ability to leak through.

This feels incredibly disingenuous, or at the least, incredibly poor journalism.