Had this for a while now - approx 2 yrs. Reduced purchase of bottled water. I have only two issues with this filter - where to send the used cartridges (as no local store seems to have bins for this) and the indicator that shows when to change filter is now broken. seen videos on Youtube on how to change battery but for the life of me - cant seem to pry this open so resorted to marking on a calendar when I have used filter for approx 6 weeks.