As mentioned…….Have it tested for the 10 time. Was the well not tested when you purchased the property ?
Well and septic tests are common if not required at time for sae I most areas ( banks often require it for a mortgage as home with “bad water has a serious value problem”.)
I know you posted flooded septic tank issues prior.
“A little off” like Arsenic, nitrates, E. coli, nitrogen and phosphorus……….these can show in the so called best water.
As for the authorities:
If the well has issues it really not going away and the consequences to you health are serious. If you find it bad or know its bad water after the test then bottled water

is the temporary fix.
Testing is simple but you must follow the directions to the letter……..because you perfect water may test bad because you or container or method of sampling contaminated the sample. Clean container, flame the faucet, run the water, sample close to the source as possible are part of the proces.
Shocking the well is a DIY for some problems but will not fix chemical.