I use a counter top 2-cartridge water filter that is connected to the faucet spout.

https://smile.amazon.com/dp/B07GBNB7VG/

I tend to fill 64oz Ball mason jars with this to keep in the fridge.

The Zero Water branded filters also perform very well, I have an older smaller size version of this that uses the same filter:

https://smile.amazon.com/ZeroWater-ZD-018-Filter-Pitcher-Quality/dp/B003QXM3U8/