What does conductivity measure in water?

Conductivity measures the ability of water to conduct an electrical current, which is primarily influenced by the presence of ions in the water. These ions are typically derived from dissolved substances, such as salts, minerals, and other total dissolved solids (TDS). Therefore, a higher conductivity reading typically indicates a higher concentration of total dissolved solids in the water.

This relationship is crucial in water quality testing, as it allows for the assessment of potential contaminants and the overall health of aquatic environments. By measuring conductivity, one can infer the concentration of these dissolved ions and thus determine the chemical makeup of the water, making it a valuable tool in environmental monitoring and water treatment processes.