A quick search for 'global aquifer depletion' yields
"Scientists had long suspected that humans were taxing the world’s underground water supply, but... major aquifers [are] indeed struggling to keep pace with demands from agriculture, growing populations, and industries such as mining." ... "The situation is quite critical" (https://www.washingtonpost.com/news/wonk/wp/2015/06/16/new-n...)
If someone talks about water usage (usually in a generic 'it takes X gallons to make a Y, so you should feel bad about doing/using Y' format) without regard to the specific sources then they are trying to bullshit you. If they talk about a specific source and use then keep reading to see if the rest of their argument holds up to scrutiny.
But ultimately it's the same conversation - any manufacturing of perishable / low-cost-to-weight ratio (e.g. cement is almost always produced at a factory within 50 miles of where it is used) at industrial scale is being done in a consistent, distributed way at many different locations around the country/world. If those processes damage vulnerable environments, they need to be looked at and modified.
Concrete (as well as mortar, stucco, and other such products) is made locally, both dry and wet mix. Cement is made in remote areas, typically near the limestone quarries, because the process involves large, dirty, smelly kilns.
They LOVE farming out here since there is virtually no rain or weather events to complicate things. They have everything down to a science and a tight schedule that rarely if ever changes. We use up 90%+ of the Colorado River for this one purpose. We then ship these all across the nation using more resources. Seems a bit wasteful.
So how much water to produce a head of lettuce?
Answered my own Lettuce -- 15 gallons
Chocolate (One Pound) -- 2847 gallons!!!!!
Ain't I a ray of sunshine this morning?
Also I have no idea where they are even getting this number. I think they are counting everything from rainwater that falls on the sugar beets, to the, water used by steam engines to produce electricity. But it's hard to tell because they don't explain the figure at all.