County health dept. says my well is fine... but I disagree. Just doesn't taste good.
I've got an RO drinking water filter, feeds my fridge water and ice-makers (two of them), and a drinking water faucet at the kitchen sink. Got it's own 5g pressure tank. Nice, clean water for cooking and drinking, crystal clear RO water ice... no need to buy and haul bottled water.
So... Booster pump to bump the 35lb well pressure to 60lb, then a prefilter, 2x carbon blocks, then a 75gpd Filmtec membrane. A permeate pump brings the downstream pressure back up, then the pressure tank. Water exiting the storage tank runs through an inline carbon block, as a final polish, and then to the fridges and sink.
Tee'd off of that, is a line running to my sump closet. That line passes through a 3 canister DI filter on it's way to my mixing station, ATO, and Kalkwasser reservoir. Zero TDS, and ICP-OES testing of the RO/DI water put it near perfect (does show a little silicon)
With a little thought, even poor quality well water can give you what you need.