Love this filtration system! Have been a satisfied, repeat customer for almost 6 years. Water quality remains very good for well over 1 year (household of 1). I notice that, after installing new cartridges, the mineral residue (cloudiness) takes awhile to disappear, but I’ve been reassured that it’s perfectly safe for consumption and it does gradually go away. I’m sure with more frequent use, it wears off faster. I know that with proper care, this well-designed and sturdy system is sure to provide many more years of pure, refreshing drinking water! Thanks for GREAT customer service, Igor!