India, Nov. 17 -- For most of us, a water purifier is something we install and then stop thinking about until there is a bad smell, strange taste or a missed service call. Filters run out quietly, lights start blinking and half the time no one in the house really knows what that means. Even in new, well planned kitchens, there is still that basic doubt: is this water actually safe enough for my family.

The newer smart purifiers are trying to fix that gap instead of just adding another shiny gadget. These RO and UV models connect to an app, show you when filters are due, send simple alerts and give a basic sense of water quality. The idea is to reduce guesswork and make the purifier feel a little more under your control.

For busy familie...