Salary. The Bureau of Labor Statistics reports that marketing managers in the United States earned an average annual wage of $126,190 as of May 2011. The median wage, or midway point between the lowest and highest salary, was $116,010 per year.
What is TDS. TDS is the total of all dissolved solid matter such as minerals, metals, salts and. contaminants in the water. B. How TDS is Determined. TDS is most often determined in pool and spa water by using a conductivity meter. These. electronic meters measure the waters' ability to conduct an electric current.
Small inflatable and plastic pools are typically filled with tap water. Some people in the United States have a disinfectant in their tap water but this is not adequate to kill germs that may get into water used for swimming. Sources of information exist about how to disinfect these pools.