Guessing you've never been to Western Canada. We only have a couple major cities, and we don't use that much groundwater both as it tends to be saline and because we have plenty of surface water to use due to snowmelt runoff. Also we don't have anything to desalinate, unless we're talking about that low-quality groundwater, which is a very expensive proposition as you say to get any significant volume.
We're not concerned about water for drinking, city usage etc. Most cities are on major rivers that are running near normally. Hydro dams have tons of storage to run until next winter's snow. On my farm I have dugouts that capture runoff, they are full. I have shallow wells on GUDI aquifers where the water is near the top of the casing! I'm irrigating my garden and my orchard like mad out of my yard dugout and that usage isn't even noticeable compared to evaporation losses.
We're concerned that our crops are dying, our livestock are starving (sold mine already) and almost none of our land is irrigated. In BC the trees are dying and burning for lack of rain and there is no way to irrigate them of course. This part of the country has long relied on a steady cycle of June and July thunderstorms for moisture - but the thunderstorms have dried up.
It just won't rain, that's all.