Our TDS/PPM is actually higher around 300 ppm (can vary depending on water source) because of the natural minerals we allow to pass through the filter. Our patents allow us to remove the bad contaminants, and identify the good minerals like beneficial trace minerals (calcium, magnesium, sodium, etc) that our bodies need and letting those pass through.If you were to use a PPM/TDS meter it would read high, but we also do not recommend using a PPM or TDS to determine the quality of the water because those meters pick up all of the natural minerals in water.