If you’re looking to buy a water purifier in 2026, I’m sure you must have come across the term ‘RO’. Most people believe that ROs are usually what water purifiers mean. But in reality, they’re much different, and you’d be surprised to know that not every home needs a full-fledged RO purifier.
But how do you actually know if yours does or not? So before you end up spending your hard-earned money on a system that may be overkill for your needs, here are the practical ways to find out.
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First of all, the quickest way to test the water quality at your home would be to use TDS, which can be done with the use of a TDS meter. They’re usually available online for under Rs 500, which makes them a must-have. It’s as simple as just dipping the machine in a glass of tap water, and after a while, it will give you a reading in ppm.
A quick cheatsheet of the ppm rating standards has been attached below:
Aside from the TDS metric, the other good thing to look out for is the water quality in your area. Your municipal corporation or local Jal Board would ideally publish water quality data online, or it can be arranged on request. These reports can flag things like water hardness, chlorine levels, bacterial load, and heavy metals, which, if they’re over the recommended level, are a sign that you should pick up an RO.
If the TDS in your area is under 300 ppm and your concern is primarily related to bacteria and viruses, a UV purifier could be a great option, as they’re effective and more economical. UV purifiers work well with municipal water that’s already treated. However, it’s important to know that neither reduces the TDS, so hardness or heavy metals are not impacted at all.
If you’re still confused about whether you actually need to buy an RO water purifier, rather than getting one, it is recommended to do some pre-checks first. Ideally, you should buy a TDS meter first, which would be a small investment that will answer the question more accurately than any other parameter. If you can pair that value with a local water report, you’ll know exactly what level of purification your home actually needs. After which, you can pick up a purifier based on that; you can either be fine with a basic UV filter or, if necessary, invest in a proper RO instead.
With that said, I hope this guide helped you understand the basics that you need to know before you buy a water purifier. For more such informative reads, keep on reading Digit.in
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