That's not a problem. There are multiple water purifier companies in the market. You can choose as per your needs. But if you want a purifier for whole house water purification with RO+UV purification system, you should go for Voltas Water Purifiers. The Voltas water purifiers are the best packaged, plug and play water purifier for whole house water purification which I am currently using for my house. It serves me pure drinking water at each and every tap of my house. It is a point of entry water purification system which is to be placed on the main water pipeline.