Here’s the plot twist: It’s not that simple. A high TDS number doesn’t automatically mean your water is dangerous. In fact, some of the healthiest mineral waters have a TDS in the hundreds.
But if your TDS is super high—like over 500 or 1000 parts per million (ppm)—your water might taste salty, metallic, or just off. Think of it as the difference between a refreshing spring and a puddle after a rainstorm.
What Is TDS in Water and What Does it Indicate?
On the flip side, very low TDS water—like distilled or reverse-osmosis water—can taste flat. It’s like drinking a ghost. No minerals, no character, just void. Your body also needs some minerals, so you don’t want to go too low.
The “Goldilocks Zone” of TDS
Most experts agree that water with a TDS between 100 and 300 ppm is the sweet spot. It tastes clean, but still has enough minerals to feel refreshing. Not too hard, not too soft—just right.
If your water is below 50 ppm, it’s like drinking from a pure cloud. Nice but boring. Above 500 ppm? You might start making a weird face every sip. And trust me, nobody wants to make a weird face at their own tap.
