The Great Lakes aren't exactly the same as pristine aquifers suitable for drinking water... https://www.usgs.gov/news/widespread-plastic-pollution-found-great-

The Great Lakes aren't exactly the same as pristine aquifers suitable for drinking water... https://www.usgs.gov/news/widespread-plastic-pollution-found-great-lakes-tributaries https://www.usgs.gov/news/widespread-plastic-pollution-found..., https://www.safewater.org/fact-sheets-1/2017/1/23/the-great-lakes https://www.safewater.org/fact-sheets-1/2017/1/23/the-great-... etc.