I have been using the purit Marvella Water Purifier for the past 10 years and it has never disappointed us, It has amazing features like advanced signals through which we can detect when the water has been purified and stored at its full capacity, when the water gets empty it gives us an orange sign, when the purifier kit needs to be changed, it gives us a red signal. Apart from that due to the R0 and UV procedure, the water is completely safe to drink and we have never experienced any issues of cholera, typhoid or any other water borne diseases. Thought it is of high cost but its worth buying the purifier.