What is the definition of "total dissolved solids" (TDS) in water?

Total dissolved solids (TDS) refers to the total concentration of all organic and inorganic substances that are dissolved in water. This includes a wide variety of compounds, such as salts, minerals, and metals, that contribute to the overall quality of the water. High levels of TDS can affect the taste, clarity, and quality of water, and may also impact processes like disinfection and chemical balancing in aquatic facilities.

Understanding TDS is important for maintaining water quality, as it provides insight into the overall health and cleanliness of the water. Regular monitoring of TDS can help operators take necessary actions to ensure the water remains safe and pleasant for users, making it a critical element in water quality management in aquatic facilities. The other choices pertain to specific measurements or different aspects of water quality that do not capture the comprehensive nature of TDS.