Do they record the zip codes of the people who sesrch their database?
Then they listed in addition, my little town.
Our water supply in town is pretty good. Good water table, that supplied us fine during the “great drought”. The issues we have is an old delivery system. Our well and water tower are modern, but our delivery system in town is old.
It has an issue with nitrates (source is probably nitrogen fertilizer), we did not have that problem until the Fed Gov put in place an assistance program for pivot sprinkler systems. Increased use of water and fertilizer concentrated some of the nitrates. The water table is one of the few that recharge fairly rapidly after drought.
Only other issue we have is bromide, it is not large but it is from the soil itself. Concentrations increase during drought, as the water table drops.
These types of tests are spot specific, in an aquifer it is not always the same from various points.