No. A TDS meter does not measure water contaminants. It will not tell you if your water is healthy. Some healthy minerals like potassium, magnesium, sodium and calcium can actually cause your TDS meter to spike. So, any water filter with a remineralizer will cause the opposite effect on a TDS meter than you expect.Your tap water could also have heavy metals like lead or other contaminants like pesticides, fluoride, pharmaceuitcals, or hexavalent chromium. The TDS meter will not pick these contaminants up. So companies like ZeroWater are doing a huge injustice by telling people that TDS meters are a good way to tell if water is not contaminated.Things your TDS Meter will not pick up:LeadFluorideMotor OilPharmacueticalsPesticidesHerbicidesArsenicPFOAPFOSPFCsTTHMsMercuryCopper