What is the ideal level for total water alkalinity in a pool, according to the Certified Pool - Spa Operator Handbook?

The ideal level for total water alkalinity in a pool is 80 to 120 ppm (parts per million). This range is essential because it helps to stabilize the pH level of the water. Proper alkalinity acts as a buffer, preventing rapid changes in pH, which can lead to discomfort for swimmers and potential damage to pool equipment and surfaces. If the alkalinity is too low, the water can become corrosive, leading to etching of plaster surfaces and corrosion of metal fixtures. Conversely, when alkalinity is too high, it can result in cloudy water and difficulty in maintaining proper pH levels. By maintaining total alkalinity within the 80-120 ppm range, pool operators can ensure a balanced and safe swimming environment.