I ending up going with 2 activated carbon filters, one is at the cistern pump and it's about 5 feet tall and full of activated carbon. The other is small and is installed at the sink and I think it's a ceramic filter with activated carbon inside. I paid 35k for the large one and 9k for the one at the sink. I'm not sure about the efficacy so I add chlorine to the cistern water and then run it through the filters. I am sending a few samples out for sending soon but until then I'm just going to drink it. I think the UV systems are more effective overall from the research I've done.
Btw, my general feeling on the filter at the sink I purchased is that is was a mistake, nothing I've read about activated carbon has convinced me about the anti-bacterial effects, that's why I add the chlorine, activated carbon seems effective at removing chlorine by products.