Consistently testing your water is the most dependable method for ensuring that the water flowing through your espresso machine falls within a safe range. TDS, an abbreviation for "Total Dissolved Solids," represents the overall mineral concentration in your water. Excessive levels can lead to troublesome scale accumulation inside your machine over time. Although the TDS meter gauges mineral content rather than total hardness, it remains essential to examine your water to determine if an additional water-softening solution is required for your equipment. This convenient tool consistently provides precise TDS readings.