What is the relationship between ec and tds?

Electrical conductivity (EC) and total dissolved solids (TDS) are both measures of water quality, particularly in relation to the concentration of dissolved ions. EC measures the ability of water to conduct electricity, which increases with the number and mobility of dissolved ions, while TDS quantifies the total concentration of all dissolved substances, including salts, minerals, and organic matter. Generally, higher EC values correspond to higher TDS levels, as more dissolved solids contribute to increased conductivity. However, the exact relationship can vary depending on the types of ions present in the water.