Cool! Would you be willing to share photos or details of your setup? Or point me to a similar one?

I live in Taiwan and currently get drinking water from fill-up stations outside due to heavy minerals in the groundwater here. It's not too inconvenient to do it once a week or so, and the water stations are ubiquitous, but I miss having drinking water from the tap.

I've visited water filter shops 2-3 times with the intent of buying a filtration system but am put off by the cost of replacement filters which I know I will have to buy frequently. I'm being cheap but the engineer in me keeps saying there's a better way.

Also, I was not able to figure out how I can test the water quality without sending it to a lab in the US. Do you test your own water?