Make Waves with the 2026 Swimming Pool Operator Cert Exam – Dive Into Success!

To achieve a 10 ppm increase in alkalinity for a swimming pool, it's important to understand the relationship between the volume of water in the pool, the existing alkalinity levels, and the amount of sodium bicarbonate required.

In general, to increase the total alkalinity of 10,000 gallons of water by approximately 10 ppm, around 1.5 pounds of sodium bicarbonate is needed. Sodium bicarbonate raises alkalinity without significantly affecting the pH level. The calculation for this dosage is based on empirical data pertaining to water chemistry and is derived from extensive research and testing in pool maintenance.

Given this understanding, the correct amount to use for a 10 ppm increase in alkalinity aligns with the commonly accepted recommendation of 1.5 pounds for every 10,000 gallons of water. This amount helps ensure balanced water chemistry, which is crucial for swimmer comfort and the longevity of pool equipment and surfaces.