What is the safe range for total alkalinity in pool water?

The safe range for total alkalinity in pool water is crucial for maintaining water balance and ensuring swimmer comfort. A total alkalinity level of 80-120 parts per million (ppm) is ideal because it acts as a buffer to stabilize the pH levels in the water. This stability prevents rapid fluctuations in pH, which can lead to equipment corrosion or scaling, and can cause irritation to the skin and eyes of swimmers.

Maintaining total alkalinity within this range helps to protect the pool surfaces and equipment from damage, and it also improves the effectiveness of pool sanitizers. If total alkalinity falls below 80 ppm, it can result in a more acidic water condition that can lead to problems like corrosive water that damages gunite surfaces or metal fixtures. Conversely, levels exceeding 120 ppm may lead to cloudiness and scaling, and make it more difficult to adjust pH levels effectively.

In summary, a total alkalinity level of 80-120 ppm is essential for the proper chemistry of pool water, promoting a safe and pleasant swimming environment.