Water purifier - 1/2

One of the first things any of the brands that you reach out to will do is to test the water and then suggest a model. So it will be useful to understand the background of these technologies and how they work together. Else you will be a sitting duck for a sales guy to push the top end model - whether you need it or not :-).

Here's another article that explains the various methods of filteration in a concise manner. bestwaterpurifiers.in/ro-vs-uv-vs-uf . 

In general - the various models of water purifier offer a combination of these filteration methods (RO, RO+UV, RO+UF+UV). We have a RO+UV at home. 

Depending on the TDS levels in your water, a simple UF filter might work too (but considering the typical levels in Bangalore and to be on the safer side, will rule a UF alone filter).

Apart from the technology (filteration methods), there are a few other aspects that you should consider before narrowing down on the model. The big one is water wastage. 

• Water wastage : RO systems waste 3-4 times the water it finally produces for drinking (E.g. From a 10L input, you will get 2-3 litres of drinking water. The rest will be wasted - typically poured down the drain - as it is not recommended to use this water for other purposes such as watering your plants in the garden).
• Storage container: Typically these are made of food grade plastic. However, these days you get containers made of stainless steel. If you prefer that, then it narrows down your options easily.

Will share a few more aspects you should consider in a bit. A follow up question - Is the borewell water mixed in the main tank / supply or are they 2 separate inlets? You can take a couple of different approaches based on that.