I like the fact that it removes all bad from the water, we lived in a place that the whole water system was closed down from Beaver Fever... and it was a long 2 weeks before they got it cleared away.... I also like that it has silver in it and that kills all bacteria before it comes out of the tap...I use a Pur filter on my home tap I got it to filter the chlorine, and it does that indeed, I will never drink bottled water..
this unit will shut down to notify you when you have a dirty cartridge AND no $$ for a new one... just clean it out!
For me there are too many unknowns out there and having seen the results of water contamination I prefer not to add any more bacteria to my body than is already there..
TO me pure water is more important than food because if I have to cook with poor water I may as well drink it.
I am sure there are lots of available parts should you need them, an email to them will answer your question, I never asked because I never thought of needing parts since the cartridge is easily cleaned and reusable. JMO