If you Google this, you’ll get a hundred charts with different numbers. But here’s the unvarnished truth: There’s no universal “perfect” number. It’s subjective, like asking if a medium-rare steak is better than one cooked well-done.
Most of the bottled water you buy falls between 100 and 300 ppm. That’s the sweet spot where you can still taste minerals (like calcium and magnesium) without feeling like you just licked a salt lick. Fun fact: Some people genuinely love high TDS water—like the stuff from natural springs—which can hit 500 ppm or more and taste like a mineral bath.
But here’s the kicker: High TDS doesn’t equal dangerous. You could have water with 800 ppm that’s perfectly safe to drink (looking at you, mineral-rich aquifers). Conversely, you could have water at 150 ppm that’s full of pesticides. TDS tells you “how much” stuff is in there, not “what” it is. Sneaky, right?
Tds Water Meter Chart – What Is A Tds Meter – FPYK
The Two Faces of Dissolved Solids
Good solids are things like calcium, magnesium, and potassium. Your body loves these – they give water that “crisp” mouthfeel and help with everything from bones to blood pressure. Bad solids are toxic heavy metals like lead, arsenic, or copper. A TDS meter lumps them all together. It’s like weighing a bag of apples and a bag of rocks and saying “both are 5 pounds.”
So don’t panic if your TDS meter reads 400 ppm. It could just mean you have deliciously hard water (which is annoying for your kettle but great for your heart). On the flip side, a reading of 50 ppm might mean you’re drinking over-purified water that’s stripped your body of essential minerals. See the catch-22? (Bet you didn’t sign up for a water philosophy lesson today, but here we are.)
What’s the rule of thumb? The WHO (World Health Organization) suggests below 300 ppm is excellent, 300–600 is good, and above 900 is poor. But take that with a grain of salt (pun intended). I’ve had incredible-tasting spring water at 450 ppm, and awful-tasting tap water at 120 ppm. Context is king.
