High TDS (Total Dissolved Solids)

  • The level of total dissolved solids (TDS) measures the combined contents of a liquid (your pool’s water) and of another substance of any nature. In other words, it represents the quantity of solids dissolved and present in the water.
  • A high TDS level indicates water that is difficult to manage and has a bad taste.
  • The level is measured in milligrams of TDS per litre; the maximum TDS range is between 1,500 and 2,500 mg/L.
  • Adding chemicals as part of standard water treatment generally increases the TDS concentration.


  • Drain half of the pool water and refill your pool with fresh water.