This is our second RO system from Waterdrop. We have an under counter model in our second house as well as this K19 system. Both work great. I have tested the output with a TDS meter and the water that comes out of both systems is great!
Best purchase I've made in years. Wish I done it sooner. Waterdrop needs to advertise better - I learned about this only via a mention by someone in a YouTube video. So grateful.
I'm unsure why so much water ends up in the "bad" column in the removable tank. It seems like I'm changing water once a day which seems like a lot since it's only me using the filter. The water has no taste, yet it's refreshing. I wish the water was more cool; I find I have to put it in the refrigerator to get it cold.