From the @SLTimes,

"The main problem with the Dakota...is its water table is decreasing 1.5 feet per year in the Storm Lake area, or 0.3%, which means the water it draws in subsequent years will become harder and thus, more expensive to treat." https://www.stormlake.com/articles/storm-lake-eyes-big-sewer-water-upgrades/

As populations of cities and really everywhere expand (and as droughts get worse) more stress is being placed on aquifers.

Meaning water restrictions will become the norm in areas not used to water restrictions.

Also means more difficult to find and use waters being used.

The result of the increased stress being placed on our water resources is higher prices, deeper wells are more expensive to drill and the water requires more treatment, and less access to water for some communities or people.
http://water.columbia.edu/research-themes/risk-and-financial-instruments/americas-water-stress-index/

From 'Climate Change Impacts in the United States; The Third National Climate Assessment' (2014)

https://www.globalchange.gov/browse/multimedia/water-stress-us

and from

https://watercenter.sas.upenn.edu/water-stress-to-water-scarcity/

Most of the Midwest has access to groundwater for drinking water, and will continue to have access, some areas are declining faster than others. Fort Doge Iowa, for example, the Jordan aquifer is declining by 5 feet per year!!

The Jordan aquifer is shallower than Dakota aquifer.

We will have access to drinking water, the quality of the water can be rather suspect in the Midwest. In the Midwest, many get water from unregulated private drinking sources. In SW Wisconsin, groundwater pollution is a HUGE issue (also true for Iowa) https://twitter.com/masbenMaas/status/1321579665136492547?s=20

In Iowa, there is lots of water pollution. See @RiverRaccoon's blog for many examples, and follow researchers doing good work to highlight the problem (too many to list here but @dcwiertny is one).

In karst areas tho, we have problems and few regulations https://twitter.com/masbenMaas/status/1268606897130741760?s=20

And if you have made it this far, here is a thread I did last year on the scale of pollution in SW Wisconsin (Lafayette county) where 42% of wells (301 randomly selected) exceeded federal health standards and discussed WHY this happened (karst)

-end https://twitter.com/masbenMaas/status/1194586053136539648?s=20