Which chemical is commonly used to raise the pH level in pool water?

Sodium carbonate, commonly known as soda ash, is effectively used to raise the pH level in pool water. When added to water, it reacts with excess acidity and neutralizes it, resulting in an increase in the pH level. Maintaining proper pH levels is crucial for water balancing, swimmer comfort, and overall pool equipment efficiency. If the pH is too low, it can lead to corrosion of equipment and discomfort for swimmers, making sodium carbonate a valuable chemical for pool operators.

Other options may serve different purposes; for instance, calcium chloride is primarily used to increase calcium hardness, sodium bicarbonate is generally used to raise alkalinity rather than pH directly, and magnesium sulfate is often not employed for pH adjustment but can play a role in other chemical balancing. Each chemical has specific applications, which is essential for effective pool maintenance.