UF and RO look similar on the shelf but treat water in very different ways. One keeps minerals and needs no power; the other…
Arjun Mehta
In fluoride belts across India, ordinary filters do little. Removing fluoride takes specific media like activated alumina or a well-set RO unit to bring…
Arjun Mehta
The sticker price is only the start. Here I break down the real yearly cost of filters, salt, membranes and waste water, and how…
Arjun Mehta
The questions readers email me most, answered in plain language, from whether clear water still needs treatment to how often cartridges really need changing.
Arjun Mehta
A low TDS number does not mean safe water, and a few other beliefs deserve a second look. Here is what filters really do…
Arjun Mehta
Most filter failures trace back to a handful of avoidable errors. Here are the ones I see most often and the simple habits that…
Arjun Mehta
Treat all the water or just the tap you drink from? This three-way comparison ends the confusion with a table and a plain verdict…
Arjun Mehta
People treat softener and RO as rivals, but they solve different problems. This side-by-side shows exactly what each does and where they overlap.
Arjun Mehta
An under-sink RO is a quieter, tidier way to get clean drinking water. Here are the units worth shortlisting and the specs that actually…
Arjun Mehta
Strip away the marketing and RO is surprisingly simple. Here is what the membrane actually does, what it takes out, and the trade-offs nobody…
Arjun Mehta
Before you spend a rupee on filters or softeners, this guide walks you through matching real water problems to the right treatment, step by…
Arjun Mehta
