Firstly water table (i.e. shallow aquifer) aquifers are far more likely to exhibit dramatic changes in elevation in shorter time frames than deeper aquifers. They are also generally more susceptible to contamination as they generally have so much less ability to filter out contaminants if they are only a metre or two below the ground's surface. Much deeper aquifers 25 feet to 90 feet not only have much more sand and gravel to filter out surface contaminants but they also often or usually have less permeable clay/silt aquitards between themselves and the ground surface which dramatically slow down contaminant downward flow. It is also very possible that the shallow aquifer (water table aquifer) could be dry due to lower than usual rainfall with only a small lessening of water levels in the deeper aquifers.
Now of course a long drought combined with for example high pumping of drilled wells will certainly decrease even the deeper aquifers water level. If as the Region state they know that they pumped their wells during 2023-2024 as well as in 2025 at unsustainable levels then it's obvious that they know what the sustainable pumping levels are and they must NOT exceed them. Ever again for ANY reason whatsoever. This is also known as "mining" your water supply and is a recipe for long term disaster.
Hence drilling more wells into the same aquifer certainly appears like a stupid decision. Other than the Region's long ago decision to artificially recharge aquifers using treated Grand River water; you generally can not increase aquifer capacity. It turns out that for whatever reason the Region's attempts to do so through artificial recharge have not been successful. I don't know the reason why but if they know then get at it and get it working. If the subsurface or other conditions make it unlikely or impossible then move on to other options and solutions.
There is some good news. For example my house sump pump water levels (shallow aquifer again) has been much lower over the last few years. Lower to bone dry. Well guess what? We had a serious 1 1/2 day thaw up to 12 degrees Celsius a couple of weeks ago and my sump has been full since. Plus with the increased rain we had in October combined with tons of snow since early November I can see the shallow aquifer levels being very high from here through to maybe May or June. Yes that water does slowly move both horizontally as well as vertically . This vertical flow eventually does hit those deeper aquifers and recharges them. That is good news although I don't know yet if increased rainfall will be a further regular phenomenon of Climate Change or not.
There was an excellent conceptual model/picture of the Waterloo and Wellesley Moraines along with today's K-W Record article titled "Drying wells and Dying wetlands". Kudos again to the Record and their reporter for keeping citizens informed. Now if only that would rub off onto the Region of Waterloo.