I have had my Zero Water dispenser for several years.  I was advised by my doctor to drink water the first thing in the morning because it will clean out the kidneys and bladder for the days pollution... I drink 32oz each morning.  What a refreshing way to start the day.  I check the water periodically... change filters when need.  Thank you Zero Water... for a healthy start to my day... and also a few glasses during the day! D Also,  I recommended Zero water to my daughter who is now a physician... she and her family enjoy a great start to the day... also many of my friends now use Zero water products as well. Thank you!