If a "Wawacity Beer" were to exist, it would likely follow these trends:

As a product of Belleflower Brewing, WawaCity is typically available at their tasting room in Portland, Maine, and through select distribution in the Northeast. If you are tracking the latest releases or community reviews, platforms like BeerAdvocate are excellent for seeing how fellow enthusiasts rank the latest batches.

It is highly likely you are actually thinking of er beer, and a simple typo or an auto-correct error changed "Warsteiner" to "Wawacity" (perhaps due to the "Wa" start and the "ity/iner" ending confusion).

Warsteiner marketed itself heavily on the purity of its water, claiming the spring was pristine. In 2014, a German consumer protection agency ( Verbraucherzentrale ) sued Warsteiner, claiming the water wasn't as "virgin" as advertised because the brewery had to use UV light and filters to ensure safety. The court ruled that Warsteiner had to change its advertising, as the water did undergo some treatment (albeit minimal), debunking the myth that it was "untouched" water.

Similar to digital files that appear and disappear, a "Wawacity beer" might be produced in small batches.