What Should Be the Tds of Drinking Water

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First, taste matters. You’re more likely to stay hydrated when your water actually tastes good. If you’re avoiding that tap water because it has a weird “mineral chalkiness,” getting your TDS in the right zone might be the fix you didn’t know you needed.

Second, it’s a health nuance. While you get minerals from food, having some in your water (like magnesium for your heart or calcium for your bones) is a nice bonus. You don’t want zero, and you don’t want a mouthful of salt.

Third, it helps you choose the right water filter. If you buy a zero-TDS filter but already have low-TDS water, you’re wasting money and flavor. If you buy a simple filter for water that’s at 400 ppm, you’ll be disappointed in the taste.

How to find your water’s number

Luckily, you don’t need a science lab. You can buy a TDS meter for about ten bucks on any online store. It looks like a little thermometer. Just dip it in a glass of your tap water, and it gives you a number instantly.

Test your tap water, then test your filtered water. It’s a fun little home experiment that takes ten seconds. My kids love doing it—they treat it like a competition to see which water “wins.”

The goal isn’t to obsess over a number. It’s just a helpful guide. Aim for that 50 to 150 ppm range, and you’ll be in the company of many great-tasting spring waters.